Women backpacking on John Muir Trail below Tressider Peak. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46942.html Hiker heading towards Biship Pass, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39821.html Trail and forest , Van Trump creek. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora47619.html Hikers standing on Mist Trail below Vernal Fall. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46548.html Hiker with panoramic view on Navajo Trail. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0856.html Hikers on trail above Lake Josephine. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34104.html Caprock coulee trail. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56940.html Exit Glacier trail with marker showing glacial retreat. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36766.html Trail through bamboo forest. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale49824.html Davis House, Mountain Farm Museum, North Carolina. Great Smoky Mountains National Park, USA. http://www.terragalleria.com/parks/np-image.grsm39951.html Hikers walking through rainbow, Mist Trail. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46546.html Lookout on North Chalone Peak at dusk. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56237.html Trail near Sunset Point. Capitol Reef National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.care57803.html Hikers on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36777.html Trail in the fall on the shore of Jordan Pond. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44837.html Grassy trail, early morning, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56962.html Steep hill and pig exclusion fence. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56217.html Harding Icefield trail passing through a young forest. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36773.html Hiking down Hugh Norris Trail amongst saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32845.html Cairn on trail, Isle Au Haut. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46091.html River Loop trail, North Cascades National Park Service Complex. Washington, USA. http://www.terragalleria.com/parks/np-image.noca47823.html Backpacker on the Appalachian Trail. Shenandoah National Park, Virginia, USA. http://www.terragalleria.com/parks/np-image.shen6888.html Trail with fallen leaves. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca39877.html Hikers on trail overlooking Grinnell Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34111.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 Smugglers Road through green hills in the spring, Santa Cruz Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis45576.html Many Glacier Valley with Grinnell Lake and Josephine Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34115.html Backpacker pausing on Greenstone ridge trail. Isle Royale National Park, Michigan, USA. http://www.terragalleria.com/parks/np-image.isro1859.html Trail in rainforest, North Cascades National Park Service Complex. Washington, USA. http://www.terragalleria.com/parks/np-image.noca47819.html Hikers and Mt Giraud, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39717.html Hiking down Mt Whitney at sunset. California http://www.terragalleria.com/mountain/mountain-image.sequ11556.html Women carrying infants on trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36781.html Pacific Crest Trail, Lyell Canyon. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46820.html Trail, tall grasses, and cottonwoods, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56950.html Bamboo lined path - Pipiwai Trail. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale49828.html Overgrown trail in late afternoon, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56948.html Trail leading to historic cave entrance in the fall. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca39882.html Backpacker entering park through Observatory Trail. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55700.html Trail on narrow ledge. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn53324.html Balconies Cave trail. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn59593.html Signs at trail junction, Isle Au Haut. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46090.html Castle Trail. Badlands National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.badl56758.html Comet Falls trail. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora47620.html Descending Mt Whitney trail near sunset. California http://www.terragalleria.com/mountain/mountain-image.sequ11574.html Visitor looking, Anhinga Trail boardwalk. Everglades National Park, Florida, USA. http://www.terragalleria.com/parks/np-image.ever56595.html Horseman speaking with hikers, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39720.html Dirt road through coastal hills, Santa Cruz Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis45581.html South Wilderness trail. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56205.html Backpacker going up Nidever canyon trail, San Miguel Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis10715.html Pig fence climbing steep hill. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56215.html Backpacker on trail above Tapeats Creek. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8518.html Trail, Convoy Point. Biscayne National Park, Florida, USA. http://www.terragalleria.com/parks/np-image.bisc56460.html Trail overlooking Colorado River. Canyonlands National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.cany53789.html Two backpackers descending on trail near Logan Pass. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34172.html Trail through grasses, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56952.html Grassy faint trail and badlands, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56978.html Path and historic cabin at Never Summer Ranch. Rocky Mountain National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.romo6013.html Park visitor looking from Navajo trail. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca53574.html Man riding horse and Langille Peak, Le Conte Canyon. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39768.html Path leading to historic abin, Cades Cove, Tennessee. Great Smoky Mountains National Park, USA. http://www.terragalleria.com/parks/np-image.grsm6768.html Backpacker and peak near Logan Pass. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34194.html Backpackers on Mist Trail. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46549.html Trail, Painted Desert. Petrified Forest National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.pefo59524.html Ancient trail, Kaloko-Honokohau National Historical Park. Hawaii, USA http://www.terragalleria.com/pacific/hawaii-big-island/kailua-kona/picture.hawa55803.html Kīlauea Iki crater floor. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55621.html Family walking on forest trail. Olympic National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.olym30153.html Hiker descending from Mauna Loa summit next to sign. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55688.html John Muir Trail, Lyell Canyon. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46821.html Man driving a pack of horses on trail, lower Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39742.html Trail winding in prairie next to butte. Badlands National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.badl56759.html Hiker silhouetted, lower Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39721.html Boundary fence on steep hillside. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56218.html Father hiking with boy next to Hetch Hetchy reservoir. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose41235.html Hikers descending trail in Wall Street Gorge. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0855.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 Family hiking on boardwalk. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44809.html Carriage road. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44793.html Lush wildflowers, Cathedral Fork. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46933.html Guadalupe Peak Trail. Guadalupe Mountains National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.guma52632.html Boundary fence along steep hill. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56214.html Hikers look at Angel Glacier, late morning. Jasper National Park, Canadian Rockies, Alberta, Canada http://www.terragalleria.com/north-america/canada/jasper/picture.caab33804.html Trail, Warner Valley. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo57302.html Cleetwood Cove trail and deck. Crater Lake National Park, Oregon, USA. http://www.terragalleria.com/parks/np-image.crla57372.html Trail covered with fallen leaves. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca39855.html High Peaks trails with stairs carved in stone. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn53322.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 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 Hikers on trail amongst wildflowers near Hidden Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34192.html Hikers approaching cliff with steps carved in stone. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn53330.html Backpackers near a tarn below Glen Pass, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5808.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 Trail through olivine hill bordering aa lava. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55697.html Dense wildflowers in forest. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46932.html Crowded Mist Trail and Vernal fall. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46550.html Man filtering water from stream, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39836.html Trail in Sentinel Meadow in autumn. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose40186.html Forest trail with boardwalk, Isle Au Haut. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad46089.html Hikers in Wall Street Gorge. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0854.html Backpackers in valley near Rae Lakes, Kings Canyon National Park. California http://www.terragalleria.com/mountain/mountain-image.kica5811.html Mount Scott trail. Crater Lake National Park, Oregon, USA. http://www.terragalleria.com/parks/np-image.crla57336.html Couple hiking on trail amongst wildflowers near Hidden Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34186.html Primitive trail on natural slab. Capitol Reef National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.care57814.html Anhinga Trail, Royal Palms Visitor Center. Everglades National Park, Florida, USA. http://www.terragalleria.com/parks/np-image.ever56589.html Looking down pig exclusion fence. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56216.html Woman hiker on the shore of Gaylor Lake. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose41261.html Trail through meadow, cottowoods and distant badlands, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56961.html Sunrise area trails. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora50912.html Trail passing under overhanging rock. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn53325.html Hiking Cleetwood Cove trail. Crater Lake National Park, Oregon, USA. http://www.terragalleria.com/parks/np-image.crla57376.html Hiking on trail, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39685.html Hikers below Bishop Pass, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39831.html Guadalupe Peak Trail crossing higher elevation forest. Guadalupe Mountains National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.guma52634.html Park visitor looking, Anhinga Trail. Everglades National Park, Florida, USA. http://www.terragalleria.com/parks/np-image.ever56597.html Trail and Navajo Dome. Capitol Reef National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.care57813.html Couple hiking down Harding Icefied trail, late afternoon. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36670.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 Faint trail at dusk, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56959.html John Muir Trail and backpackers under Tressider Peak. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46940.html Trail in autumn forest. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca39858.html Father and son on trail above Long Lake, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39828.html Built trail and fall colors, Hot Spring Mountain. Hot Springs National Park, Arkansas, USA. http://www.terragalleria.com/parks/np-image.hosp38299.html Door and tunnel, Changchun trail. Taroko National Park, Taiwan http://www.terragalleria.com/asia/taiwan/taroko/picture.taiw55276.html Trail and trees in fall colors, Gulpha Gorge. Hot Springs National Park, Arkansas, USA. http://www.terragalleria.com/parks/np-image.hosp38338.html Hikers surrounded by wildflowers on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36778.html Soft grass-covered trail, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56980.html Well marked portion of Mauna Loa summit trail. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55689.html Looking down boundary fence. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56213.html Hikers at Bishop Pass, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39830.html Hikers on the Chesler Park trail, the Needles. Canyonlands National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.cany10654.html Zion Canyon from West Rim Trail, stormy evening. Zion National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.zion20239.html Steps of Eorimok trail, Hallasan National Park. Jeju Island, South Korea http://www.terragalleria.com/asia/south-korea/jeju-island/picture.skor51972.html Hikers on trail, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39684.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 trail above Saddlebag Lakes, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39832.html Backpackers, Escalante Route trail. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca59417.html Trail in pine forest. Kings Canyon National Park, California, USA. http://www.terragalleria.com/parks/np-image.kica51453.html Trail near Logan Pass. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34195.html Woman leading horse pack train on trail, Upper Merced River Canyon. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46919.html Trail marker signs in the fall. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44792.html Backpackers below Kearsarge Pass. Kings Canyon National Park, California, USA. http://www.terragalleria.com/parks/np-image.kica5806.html Navajo Trail descending between Hoodoos. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0852.html Longs Peak trail. Rocky Mountain National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.romo57047.html Boardwalk and trees in rain forest. Pacific Rim National Park, Vancouver Island, British Columbia, Canada http://www.terragalleria.com/north-america/canada/pacific-rim/picture.cabc10897.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 Hikers pointing, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39716.html Pig fence climbing up to Chalone Peak. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56211.html Hiker at the base of hoodoos. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca45179.html Boardwalk in wet forest environment. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44813.html Boardwalk in rain forest. Pacific Rim National Park, Vancouver Island, British Columbia, Canada http://www.terragalleria.com/north-america/canada/pacific-rim/picture.cabc10896.html Gate on pig fence. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn56210.html Chasm Lake trail. Rocky Mountain National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.romo57042.html Hikers in Dusy Basin, morning. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39714.html Hikers looking at map and pointing, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39715.html Rocks and trail in Bear Gulch Caves. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.usca9442.html Close view of hikers, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39719.html Hikers on trail above Le Conte Canyon. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39736.html Juniper Canyon trail in spring. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn55841.html Kīlauea Iki crater and rainbow. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55620.html Two people hiking down Harding Ice Field trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36671.html Stone steps on trail in forest with fall foliage, Gulpha Gorge. Hot Springs National Park, Arkansas, USA. http://www.terragalleria.com/parks/np-image.hosp38344.html Backpackers in Surprise Valley, Thunder River and Deer Creek trail. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8514.html High Peaks trail. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn53336.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 Backpacker, Escalante Route trail. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca59416.html Hikers on trail above Saddlebag Lakes, John Muir Wilderness. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.usca39833.html Paved trail and forest in fall foliage. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca39881.html Trail through lush wildflowers. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46934.html Hikers on trail below Biship Pass, Dusy Basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39820.html Giant ferns bordering Kīlauea Iki Trail. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55619.html Kīlauea Iki Trail in rainforest. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo55618.html Backpacker walking on Greenstone ridge trail. Isle Royale National Park, Michigan, USA. http://www.terragalleria.com/parks/np-image.isro1858.html Brown bears encounters on trail are frequent at Brooks camp. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0096.html Hiking into amphitheater. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca45187.html Trail junction and signs, Wizard Island. Crater Lake National Park, Oregon, USA. http://www.terragalleria.com/parks/np-image.crla57411.html Trail in autumn on Jordan Pond shores. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44835.html Backpackers on Esplanade, Thunder River and Deer Creek trail. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8513.html Hikers on rugged section of High Peaks trail. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn53328.html Condor Gulch Trail through oak forest. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn55860.html Hiking surrounded by wildflowers on Harding Icefield trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36779.html Hiking down Mt Whitney in cold conditions. California http://www.terragalleria.com/mountain/mountain-image.sequ11555.html Mist Trail from above. Yosemite National Park, California, USA. http://www.terragalleria.com/parks/np-image.yose46547.html Flame Azaleas along Laurel Falls trail, Tennessee. Great Smoky Mountains National Park, USA. http://www.terragalleria.com/parks/np-image.grsm6780.html Hikers on shore of Jordan Pond. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44829.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 Grassy trail, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56949.html Winding dirt road and ocean, Santa Cruz Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis45580.html Navajo Trail in winter. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca0851.html Family hiking on trail amongst wildflowers near Hidden Lake. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34193.html Women hiking on the Grinnell Glacier trail. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34109.html Hiker on trail above Pine Spring Canyon. Guadalupe Mountains National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.guma52686.html Hiker and saguaro cactus, Hugh Norris Trail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32843.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 Wizard Island summit trail. Crater Lake National Park, Oregon, USA. http://www.terragalleria.com/parks/np-image.crla57413.html Boardwalk in forest. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44811.html Bamboo forest along Pipiwai trail. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale1729.html Hiking down the Grinnell Glacier trail, afternoon. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34114.html Trail overgrown with grasses, Elkhorn Ranch Unit. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro56979.html Hikers on Medicine Root Trail. Badlands National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.badl56771.html Boardwalk on shores of Jordan Pond. Acadia National Park, Maine, USA. http://www.terragalleria.com/parks/np-image.acad44814.html Group hiking on the Grinnell Glacier trail. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34107.html Pack horses on trail above Le Conte Canyon. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39735.html Hiker stepping down on primitive stairs, Maze District. Canyonlands National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.cany57625.html Hiker on trail in spring. Pinnacles National Park, California, USA. http://www.terragalleria.com/parks/np-image.pinn55843.html Hikers on steep trail to Dollhouse from Spanish Bottom. Canyonlands National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.cany53788.html Meadow with flowers and historic cabin, Never Summer Ranch. Rocky Mountain National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.romo6012.html Hiking trail below hoodoos. Bryce Canyon National Park, Utah, USA. http://www.terragalleria.com/parks/np-image.brca45182.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 Trail through bamboo canopy. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale49823.html Trail, stream, and Longs Peak. Rocky Mountain National Park, Colorado, USA. http://www.terragalleria.com/parks/np-image.romo57043.html Reef Bay trail. Virgin Islands National Park, US Virgin Islands. http://www.terragalleria.com/parks/np-image.viis60138.html Petroglyph Trail. Virgin Islands National Park, US Virgin Islands. http://www.terragalleria.com/parks/np-image.viis60156.html Trail bordered by rock wall. Virgin Islands National Park, US Virgin Islands. http://www.terragalleria.com/parks/np-image.viis60150.html Trail and plants growing on rock wall. Virgin Islands National Park, US Virgin Islands. http://www.terragalleria.com/parks/np-image.viis60152.html Trail in dry tropical forest. Virgin Islands National Park, US Virgin Islands. http://www.terragalleria.com/parks/np-image.viis60169.html Trail and overgrown rock wall. Virgin Islands National Park, US Virgin Islands. http://www.terragalleria.com/parks/np-image.viis60151.html Thunder Creek trail, North Cascades National Park Service Complex. Washington, USA. http://www.terragalleria.com/parks/np-image.noca60475.html Largest tree in the Grove of the Patriarchs. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora60635.html Bridge over Chinook Creek. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora60604.html Boardwalk in autumn, Grove of the Patriarchs. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora60634.html Forest trail in autumn, Ohanapecosh. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora60627.html Trail in Ohanapecosh forest. Mount Rainier National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.mora60629.html Irely Lake Trail in autumn, North Fork. Olympic National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.olym60678.html Trail in autumn Hoh Rain Forest. Olympic National Park, Washington, USA. http://www.terragalleria.com/parks/np-image.olym60728.html James Irwing Trail, Prairie Creek Redwoods State Park. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw61236.html Bridge, James Irwing Trail, Prairie Creek Redwoods State Park. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw61233.html Bridge over Prairie Creek, Prairie Creek Redwoods State Park. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw61234.html Hiker between giant redwoods, Boy Scout Tree trail, Jedediah Smith Redwoods State Park. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw61134.html Visitor looking, Boy Scout Tree trail, Jedediah Smith Redwoods State Park. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw61135.html Trail and Enderts Beach. Redwood National Park, California, USA. http://www.terragalleria.com/parks/np-image.redw61160.html Hikers on trail below Wasson Peak. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu61525.html Hugh Norris Trail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu61521.html Cherry Canyon Trail, Santa Rosa Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis61632.html Hikers at Lobo Canyon entrance, Santa Rosa Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis61682.html Campers haul gear, Santa Rosa Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis61728.html Hikers on road, Santa Rosa Island. Channel Islands National Park, California, USA. http://www.terragalleria.com/parks/np-image.chis61681.html