Hikers on trail above Lake Josephine. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34104.html Backpackers with big packs going down a slope. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11088.html Jumping over a small stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11030.html Woman backpacker with a large backpack. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11065.html Backpacker in the tundra at the entrance of Arrigetch Creek. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1832.html Backpacker in Arrigetch Creek. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1820.html Hikers filing up a water container with a filter. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11036.html Women carrying infants on trail. Kenai Fjords National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.kefj36781.html Hiker drying out socks after a stream crossing. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11033.html Man and woman pausing with backpacks below the East face of Mt Whitney. California http://www.terragalleria.com/mountain/mountain-image.sequ11541.html Backpacker cooks meal on gas campstove. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11075.html Backpacker in Arrigetch Creek. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1830.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 Woman with backpack pausing on steep terrain above Iceberg Lake. California http://www.terragalleria.com/mountain/mountain-image.sequ11571.html Backpacker unpacking backpack into the tent. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11072.html Woman backpacker with a large backpack tying up her shoelaces. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11049.html Two backpackers seen from the side walking fast in the tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11078.html Hiker crossing a stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11031.html Three women backpackers walking in the tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11066.html Women wading in the knee-deep seasonal lake. Death Valley National Park, California, USA. http://www.terragalleria.com/parks/np-image.deva32638.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 Trailer loaded with backpacking gear. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11022.html Backpackers walking on a slope. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11045.html Backpackers orient themselves on the map while the plane is taking off. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11027.html Backpacker balancing herself while crossing a stream. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11054.html Backpacker finishes packing up backpack. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11074.html Two women backpackers pausing in the tundra with alpine flowers in the background. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11082.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 Two backpackers arrive at a ridge as a storm clears. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11079.html Hiking down Mt Whitney in cold conditions. California http://www.terragalleria.com/mountain/mountain-image.sequ11555.html Backpacker in the tundra at the entrance of Arrigetch Creek. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1833.html Getting ready to load the floatplane with the backpacking gear. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11023.html Hiking down the Grinnell Glacier trail, afternoon. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34114.html Backpacker on a ridge above vast expenses of tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11085.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 Backpacker hikes in sand-like ash, Valley of Ten Thousand smokes. Katmai National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.katm0068.html Group hiking on the Grinnell Glacier trail. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34107.html Backpackers walking down on a carpet of alpine flowers towards Twin Lakes. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11083.html Backpacker in Arrigetch Valley. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1825.html Backpacker collects water from a neve melt-off in the otherwise dry Valley of Ten Thousand smokes. Katmai National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.katm0135.html Backpackers take a pause when arriving on sight of Twin Lakes. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11084.html Backpackers crossing a neve. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11046.html Backpackers dropped off by floatplane on Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11025.html Riding on the trailer with the gear. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11021.html Backpacker in Arrigetch Creek. Gates of the Arctic National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.gaar1829.html Woman with backpack hiking at the base of Mt Whitney. California http://www.terragalleria.com/mountain/mountain-image.sequ11540.html Backpackers travelling cross-country on the shore of Turquoise Lake. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11052.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 Descending Mt Whitney trail near sunset. California http://www.terragalleria.com/mountain/mountain-image.sequ11574.html Mountaineers hiking on approach to East face of Mt Whitney. California http://www.terragalleria.com/mountain/mountain-image.sequ11573.html Backpacker crossing a stream on pebbles. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11055.html Woman backpacker putting back boots after a stream crossing. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11068.html Backpacker looking at Turquoise Lake. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11043.html Backpacker pausing on the shore of Turquoise Lake. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11050.html Women hikers consulting a map. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11034.html Woman crossing stream on rocks, John Muir Wilderness. California, USA http://www.terragalleria.com/california/picture.usca39837.html Backpacker walking on rocks on the shore of Turquoise Lake. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11051.html Backpackers dropped off by floatplane on Lake Turquoise orient themselves on the map. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11026.html Women hikers pausing below the Telaquana Mountains. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11035.html Hikers crossing a stream next to Lake Turquoise. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11032.html Two backpackers on the tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11076.html Backpackers breaking camp and readying backpacks. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11042.html Backpacker seen from the side walking fast in the tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11080.html Three backpackers walk on a ridge in the tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11077.html Couple hiking on trail, with Grinnell Lake below. Glacier National Park, Montana, USA. http://www.terragalleria.com/parks/np-image.glac34105.html Hiking group posing in Dusy basin. Kings Canyon National Park, California http://www.terragalleria.com/mountain/mountain-image.kica39819.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 Backpackers seen from the side in the tundra. Lake Clark National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.lacl11081.html