Morning Glory Pool with hikers. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell8795.html Hiking down from Sahale Peak to Cascade Pass, North Cascades National Park. Washington, USA. http://www.terragalleria.com/parks/np-image.noca2982.html Hiker on sand dunes. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5797.html Group of Hikers descending slopes, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca10088.html Backpackers below Kearsarge Pass. Kings Canyon National Park, California, USA. http://www.terragalleria.com/parks/np-image.kica5806.html Hiker balances himself in the Wave. Vermilion Cliffs National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/vermilion-cliffs-national-monument/picture.usaz8977.html Navajo Trail descending between Hoodoos. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0852.html Hiker looking at ice wall at the front of Reid Glacier. Glacier Bay National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.glba36895.html People amongst glacier and peaks, Columbia Icefield. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33875.html Hiker standing on a rock overlooking Peyto Lake. Banff National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/banff/picture.caab33694.html Hikers observe a live lava flow at close distance. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo3690.html Man standing on overlook above Harding ice field, early morning. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36697.html Hikers on trail amongst wildflowers near Hidden Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34192.html Man standing at edge of Grand Canyon at Toroweap, early morning. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca5499.html Hiker walks on suspension bridge, Lava Canyon. Mount St Helens National Volcanic Monument, Washington http://www.terragalleria.com/america/washington/mount-st-helens/picture.uswa11409.html Hiker on steep trail, Laem Phra Nang, Rai Leh. Krabi Province, Thailand http://www.terragalleria.com/asia/thailand/railay/picture.thai48275.html Hikers on Kalalau trail, Na Pali coast. Kauai island, Hawaii, USA http://www.terragalleria.com/pacific/kauai/na-pali-coast/picture.hawa49876.html Hikers above Sand Beach. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad50778.html Sunrise area trails. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora50912.html Woman crossing stream on rocks, John Muir Wilderness. California, USA http://www.terragalleria.com/california/picture.usca39837.html Watching the sunset over the San Juan River, Monument Valley in the background. Bears Ears National Monument, Utah, USA http://www.terragalleria.com/america/utah/bears-ears/picture.usut9010.html Family walking on forest trail. Olympic National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.olym30153.html Couple snowshowing with baby. Grand Teton National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.grte49126.html Visitor surveying panorama at Font Point. Anza Borrego Desert State Park, California, USA http://www.terragalleria.com/california/picture.usca9731.html Hiker approaching Diving Board. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46731.html Hikers on Summit of Lassen Peak. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1511.html Hiker on tiny footbrige above stream, Tennessee. Great Smoky Mountains National Park, USA. http://www.terragalleria.com/parks/np-image.grsm6813.html Hikers crossing a stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11032.html Hikers go down Round Top Mountain. Mokelumne Wilderness, Eldorado National Forest, California, USA http://www.terragalleria.com/california/picture.usca9798.html Hikers on trail to Point Bennett, San Miguel Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis10723.html Mountaineer hiking on the way to Sahale Peak, North Cascades National Park. Washington, USA. http://www.terragalleria.com/parks/np-image.noca2976.html Snow field below Glen Pass with hikers in the distance, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5807.html Hiker on ridge, Mesquite Dunes, sunrise. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5793.html Man above a sea of clouds. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36707.html Hikers take refuge in the ice-clad summit tower during a cold winter day, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca9461.html Hikers at the base of tall tree in Wall Street Gorge. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0853.html Hiker with backpack looking at iceberg-filed lake, glaciers, and mountain, Mt Edith Cavell. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33865.html Hiking Kalalau trail. Kauai island, Hawaii, USA http://www.terragalleria.com/pacific/kauai/na-pali-coast/picture.hawa49880.html Hiker with backpack on a side formation of the Wave. Vermilion Cliffs National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/vermilion-cliffs-national-monument/picture.usaz8978.html Hiker near Diving Board and Half-Dome. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46732.html Hiker on a hill below Reid Glacier. Glacier Bay National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.glba36889.html Backpacker and peak near Logan Pass. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34194.html Family walking on Rialto Beach. Olympic National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.olym30152.html Women hikers pausing below the Telaquana Mountains. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11035.html Hiking across island to Point Bennett, San Miguel Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis10724.html Backpackers on boulder fields in Aquarius Valley. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1824.html Hiker wearing backpack looking at Peyto Lake. Banff National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/banff/picture.caab33699.html Hiker standing on flat rocks on top of Mt Whitney summit. California http://www.terragalleria.com/mountain/mountain-image.sequ11551.html Hikers below Round Top Mountain. Mokelumne Wilderness, Eldorado National Forest, California, USA http://www.terragalleria.com/california/picture.usca9799.html Hikers dwarfed by the walls of Wall Street, the Narrows. Zion National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.zion8615.html Hiker on trail amongst fall colors, Hot Spring Mountain. Hot Springs National Park, Arkansas, USA. http://www.terragalleria.com/parks/np-image.hosp38300.html Trail markers on the top of Ayers Rock. Uluru-Kata Tjuta National Park, Northern Territories, Australia http://www.terragalleria.com/pacific/australia/ayers-rock/picture.aust2511.html Hikers exploring a cascade, Lost Coast. California, USA http://www.terragalleria.com/california/picture.usca10031.html Hiker looking down into Grand Canyon at Toroweap, early morning. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca5498.html Hiker on top of Mauna Ulu crater. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo1610.html Visitor at Font Point. Anza Borrego Desert State Park, California, USA http://www.terragalleria.com/california/picture.usca9738.html Hikers cross suspension bridge over Lava Canyon. Mount St Helens National Volcanic Monument, Washington http://www.terragalleria.com/america/washington/mount-st-helens/picture.uswa30680.html Tourists look at redwood trees. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30523.html Hiker on snowshoes entering Tuolumne Grove in winter. Yosemite National Park, California http://www.terragalleria.com/mountain/mountain-image.yose40237.html Hiker on Montara Mountain. San Mateo County, California, USA http://www.terragalleria.com/california/picture.usca9515.html Hikers in Dusy Basin, morning. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39714.html Hikers on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36777.html Dune field with hikers, Mesquite Dunes. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5796.html Toe of Athabasca Glacier with tourists in delimited area. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33877.html Kalalau trail. Kauai island, Hawaii, USA http://www.terragalleria.com/pacific/kauai/na-pali-coast/picture.hawa49890.html Mist Trail from above. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46547.html Hikers at the bottom of the Wave. Vermilion Cliffs National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/vermilion-cliffs-national-monument/picture.usaz8979.html Two backpackers descending on trail near Logan Pass. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34172.html Hikers observing Point Bennett from a distance, San Miguel Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis10721.html Jumping over a small stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11030.html Hiker standing on top of Round Top Mountain. Mokelumne Wilderness, Eldorado National Forest, California, USA http://www.terragalleria.com/california/picture.usca9800.html Navajo Trail in winter. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0851.html Visitor dwarfed by Giant Redwood trees. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw5813.html Hiker on trail. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30519.html Ascending Ayers Rock. Uluru-Kata Tjuta National Park, Northern Territories, Australia http://www.terragalleria.com/pacific/australia/ayers-rock/picture.aust6175.html Hiker reaches for item in backpack on Root Glacier. Wrangell-St Elias National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.wrst6420.html Suspension bridge over Lava Canyon. Mount St Helens National Volcanic Monument, Washington http://www.terragalleria.com/america/washington/mount-st-helens/picture.uswa30679.html Backpacker in Arrigetch Valley. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1826.html Hiker and cables on the regular route to Half-Dome. Yosemite National Park, California http://www.terragalleria.com/mountain/mountain-image.yose11563.html Hiker in the Aiguilles Rouges and Mont-Blanc range, Alps, France. http://www.terragalleria.com/mountain/mountain-image.alps3511.html Family hiking on boardwalk. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44809.html Hiker descending South Turner Mountain under the rain. Baxter State Park, Maine, USA http://www.terragalleria.com/america/maine/baxter-state-park/picture.usme44598.html Hiker looking at ice wall at the terminus of Reid Glacier. Glacier Bay National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.glba36896.html Hiker on trail at the summit of Mission Peak, Mission Peak Regional Park. California, USA http://www.terragalleria.com/california/picture.usca9448.html Hikers wading, Oneonta Gorge. Columbia River Gorge, Oregon, USA http://www.terragalleria.com/america/oregon/columbia-river-gorge/picture.usor37595.html Group of Hikers on a distant trail, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca10089.html Hikers on the Chesler Park trail, the Needles. Canyonlands National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.cany10654.html Hikers descending Hugh Norris Trail amongst saguaro cactus, late afternoon. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32848.html Hiker on hardened lava flow at the end of Chain of Craters road. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo1611.html Visitor sitting on edge of Grand Canyon, Toroweap. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca5500.html Hiking on trail, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39685.html Women with child carrier backpacks on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36780.html Tourists in a marked area of Athabasca Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33872.html Hiking down the Grinnell Glacier trail, afternoon. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34114.html Hiker on a ridge in the Mesquite Dunes, sunrise. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5795.html Hikers walk out of the Wave. Vermilion Cliffs National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/vermilion-cliffs-national-monument/picture.usaz8976.html Hikers filing up a water container with a filter. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11036.html Father hiking with boy next to Hetch Hetchy reservoir. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose41235.html Hiker sitting on steps of Kennicott Lodge. Wrangell-St Elias National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.wrst37185.html Golden cascade and hiker. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca9496.html Hiker descends from summit amongst boulders above treeline. Baxter State Park, Maine, USA http://www.terragalleria.com/america/maine/baxter-state-park/picture.usme44564.html Hikers ascend Ayers Rock. Uluru-Kata Tjuta National Park, Northern Territories, Australia http://www.terragalleria.com/pacific/australia/ayers-rock/picture.aust2510.html Hiker sitting on top of Round Top Mountain. Mokelumne Wilderness, Eldorado National Forest, California, USA http://www.terragalleria.com/california/picture.usca9801.html Backpacker in boulder field at the base of the Arrigetch Peaks. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1822.html Woman hiking on suspension bridge, Lava Canyon. Mount St Helens National Volcanic Monument, Washington http://www.terragalleria.com/america/washington/mount-st-helens/picture.uswa11408.html Hiker with panoramic view on Navajo Trail. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0856.html Group of hikers on faint trail, Sunol Regional Park. California, USA http://www.terragalleria.com/california/picture.usca35147.html Hiker standing on top of Half-Dome, overlooking Tenaya Canyon. Yosemite National Park, California http://www.terragalleria.com/mountain/mountain-image.yose11559.html Hiker on trail in the spring, Santa Cruz Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis45582.html Hiker gets out of the ice-clad summit tower during a cold winter day, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca9463.html Hikers on shore of Jordan Pond. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44829.html Climbing into the Novaropta crater, where fumeroles are still present, Valley of Ten Thousand smokes. Katmai National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.katm0077.html Hiker with backpack standing on boardwalk. Congaree National Park, South Carolina, USA. http://www.terragalleria.com/parks/np-image.cosw37875.html Hikers at the base of the North Face of Wheeler Peak. Great Basin National Park, Nevada, USA. http://www.terragalleria.com/parks/np-image.grba8594.html Hiker and saguaro cactus, Hugh Norris Trail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32843.html Hiker in narrow passage between rock walls, the Needles. Canyonlands National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.cany10655.html Two people hiking down Harding Ice Field trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36671.html Hikers pointing, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39716.html Hikers on the shore of Cavell Pond with high glacier wall behind. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33866.html Man and children hiking on moraine at the base of Exit Glacier. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36768.html Close view of hikers, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39719.html Athabasca Glacier with people in delimited area. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33878.html Couple checking out the ice at the terminus of Exit Glacier. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36770.html Backpackers in valley near Rae Lakes, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5811.html Hikers on a moraine below Mt Edith Cavell, morning. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33790.html Tourists descending Athabasca Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33873.html Hiker silhouetted, lower Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39721.html Hikers on alpine terrain and Mt Giraud range, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39718.html Hiker heading towards Biship Pass, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39821.html People in delimited area at the toe of Athabasca Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33880.html Hiker on a moraine below Mt Edith Cavell and Angel Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33791.html Woman hiking on trail near Mt Edith Cavell. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33805.html Hiker in Golden Canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5799.html Hikers climbing in a narrow side canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5802.html Hiker standing on overlook above Harding icefield. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36698.html Horseman speaking with hikers, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39720.html Harding icefield with man standing in the distance. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36699.html Tourists and families on Athabasca Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33874.html Exit Glacier trail with marker showing glacial retreat. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36766.html Backpackers on the Valley Floor. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5803.html Hikers surrounded by tall walls in Golden Canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5800.html Mountains and sea of clouds, hiker on snow-covered trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36709.html Hiker looking at the face of Cavell Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33867.html Walking under a small waterfall on the Grinnell Glacier trail. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34108.html Tourists walking onto Athabasca Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33871.html Switchback on trail, with Grinnel Lake and Josephine Lake in the background. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34116.html Hikers looking at map and pointing, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39715.html Hikers surrounded by wildflowers on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36778.html Hikers on trail below Biship Pass, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39820.html Couple hiking on trail amongst wildflowers near Hidden Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34186.html Hiking towards tall dune, the Mesquite Dunes, sunrise. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5794.html Mountains with snowboarder hiking down on snow-covered trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36708.html Hiker with map near lake, lower Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39723.html Hiker contemplaing a sea of clouds. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36706.html Couple hiking down Harding Icefied trail, late afternoon. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36670.html Women hiking on the Grinnell Glacier trail. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34109.html Woman backpacker drying socks after a stream crossing. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11070.html Hikers on trail below the face of Mt Edith Cavell. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33789.html Family exploring at the base of Exit Glacier. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36767.html Toe of Athabasca Glacier with tourists in delimited area. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33881.html Crossing the outlet stream of the Grinnell glacial lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34118.html Hikers on slopes above side canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5798.html Hiker walking on Wood Creek suspension footbridge, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5809.html Woman wading in Manly Lake. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva32649.html Hikers on trail above Lake Josephine. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34104.html Hikers and Mt Giraud, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39717.html Hikers on trail, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39684.html Man looking at the Harding ice field, early morning. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36701.html Hikers on trail overlooking Grinnell Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34111.html Many Glacier Valley with Grinnell Lake and Josephine Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34115.html Hiker checks map on Root Glacier. Wrangell-St Elias National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.wrst6418.html Backpackers on Mist Trail. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46549.html Hikers in narrows, Mosaic canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva32566.html Hikers standing on Mist Trail below Vernal Fall. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46548.html Tourists standing amongst redwood trees. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30525.html Hiking surrounded by wildflowers on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36779.html People in delimited area, Athabasca Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33879.html Tourists walking on trail amongst redwood trees. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30526.html Women hikers consulting a map. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11034.html Hikers in Wall Street Gorge. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0854.html Hikers in slot, Mosaic canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva32561.html Hikers watching mountains goats near Logan Pass. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34185.html Tourists near the tree named Mother of the Forest, a 329 foot high tree. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30520.html Hiking trail below hoodoos. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca45182.html Hikers on trail above Le Conte Canyon. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39736.html Woman backpacker putting back boots after a stream crossing. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11068.html Tourists amongst redwood trees. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30527.html Tourists on Athabasca Glacier, Columbia Icefield. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33870.html Looking at marine wildlife at Point Bennett, San Miguel Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis10722.html Groups of people amongst glacier and peaks. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33876.html Summit trail after a snow-storm, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca9465.html Father and son hiking on granite slab, Le Conte Canyon. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39743.html Hikers walking through rainbow, Mist Trail. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46546.html Woman hiker on the shore of Gaylor Lake. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose41261.html Hikers descend steep trail in forest. Baxter State Park, Maine, USA http://www.terragalleria.com/america/maine/baxter-state-park/picture.usme44560.html Hiker at the base of hoodoos. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca45179.html Hiker with backpack surveying Grinnell Glacier. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34127.html Crowded Mist Trail and Vernal fall. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46550.html Hikers taking in view near sign marking summit of South Turner Mountain. Baxter State Park, Maine, USA http://www.terragalleria.com/america/maine/baxter-state-park/picture.usme44573.html Hiker on moraine near Grinnell Glacier. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34128.html Hiking into amphitheater. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca45187.html Family hiking on moraine at the base of Exit Glacier. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36769.html Hiker drying out socks after a stream crossing. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11033.html Women wading in the knee-deep seasonal lake. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva32638.html Women Park rangers on trail during a field study. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36775.html Visitor standing at the base of tall redwood trees. Big Basin Redwoods State Park, California, USA http://www.terragalleria.com/california/picture.usca30539.html Hiker crossing a stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11031.html Hiker checks map on Root Glacier. Wrangell-St Elias National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.wrst6419.html Group hiking on the Grinnell Glacier trail. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34107.html Hikers descending trail in Wall Street Gorge. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0855.html Cliffs on North Face of Mount Hoffman with hiker standing on top. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose40162.html Women carrying infants on trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36781.html Backpackers near a tarn below Glen Pass, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5808.html Bright yellow flowers and hikers in the background, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca10087.html Hiker looking at map in front of lake, lower Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39722.html Hiker standing on top of Round Top Peak. Mokelumne Wilderness, Eldorado National Forest, California, USA http://www.terragalleria.com/california/picture.usca9802.html Summit trail after a snow-storm, Mt Diablo State Park. California, USA http://www.terragalleria.com/california/picture.usca9464.html Wildflowers near the summit of Mission Peak, Mission Peak Regional Park. California, USA http://www.terragalleria.com/california/picture.usca9449.html Hiker looking at the Harding icefield. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36702.html Couple hiking on trail, with Grinnell Lake below. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34105.html Hiker on a trail below Angel Glacier. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33801.html Wood Creek suspension creek, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5810.html Backpackers being picked up by floatplane at Twin Lakes. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11090.html Hiking down Hugh Norris Trail amongst saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32845.html Hikers in a side canyon. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva5801.html Tourists wading in the rare seasonal lake. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva32634.html Group of hikers on the shores of Turquoise Lake. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11060.html