Alpine bearberry (Arctostaphylos alpina) in fall color on the tundra, Denali National Park, Alaska, United States of America, North America

Views of Austfonna, an ice cap located on Nordaustlandet in the Svalbard archipelago in Norway, Arctic, Europe

A large stand of Arctic cotton (Eriophorum callitrix) in Denali National Park, Alaska, United States of America

Adult Dall sheep (Ovis dalli) in Denali National Park, Alaska, United States of America

A large stand of Arctic cotton (Eriophorum callitrix) in Denali National Park, Alaska, United States of America

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing within the town limits of Longyearbyen, Svalbard, Norway

The Negribreen (Negri Glacier), in Olav V Land on the island of Spitsbergen in the Svalbard Archipelago, Norway, Arctic, Europe

Adult Dall sheep (Ovis dalli) in Denali National Park, Alaska, United States of America

Adult Dall sheep (Ovis dalli) in Denali National Park, Alaska, United States of America

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing on tundra in the Svalbard Archipelago, Norway, Arctic, Europe

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing on tundra in the Svalbard Archipelago, Norway, Arctic, Europe

Young woman laughing, lying on a rock, relaxing, hiker enjoying the panorama on summit of historic Chilkoot Pass, Chilkoot Trail, Crater Lake behind, alpine tundra, Yukon Territory, British Columbia, B. C., Canada

Young woman resting, hiker with backpack, water bottle, panorama, deep lake behind, historic Chilkoot Trail, Chilkoot Pass, alpine tundra, Yukon Territory, British Columbia, B. C., Canada

Young woman jumping across a creek, hiking, backpacking, hiker with backpack, historic Chilkoot Trail, Chilkoot Pass, near Crater Lake, alpine tundra, Yukon Territory, British Columbia, B. C., Canada

Young woman hiking, backpacking, hiker with backpack, snow field, descending towards summit of historic Chilkoot Trail, Chilkoot Pass, Crater Lake behind, alpine tundra, Yukon Territory, British Columbia, B. C., Canada

Elk, Wapiti (Cervus elaphus), bull grazing on alpine tundra, Rocky Mountain National Park, Colorado, USA

A camper on the coastal plain, 1002 Area, of the Arctic National Wildlife Refuge looks back towards the mountains, Alaska.

Kenai Fjords National Park and Exit Glacier on a mid-summer day as seen from the Harding Icefield Trail in South-central Alaska, Alaska, United States of America

Portrait of a bull moose (Alces alces) walking through an alpine meadow late in the rut in Southcentral Alaska's Chugach State Park, Alaska, United States of America

Dall's sheep (ovis dalli) rams standing by rock outcrop in alpine tundra in autumn, denali national park, Alaska, united states of america

Green backpacking tent set up on the tundra with mountain in background on a sunny summer day in the Brooks Range, Arctic National Wildlife Refuge (ANWR); Alaska, USA

Mount Ascension reflects on Lost Lake, Chugach National Forest, Kenai Peninsula, South-central Alaska in summertime; Seward, Alaska, United States of America

Pail of wild blueberries picked from the alpine tundra of Southcentral Alaska's Kenai Mountains. Blueberries of one variety or another are found throughout Alaska, Alaska, United States of America

A collared pika (Ochotona collaris) pausing on the alpine tundra at Southcentral Alaska's Hatcher Pass, high in the Talkeetna Mountains north of Palmer in late August, Alaska, United States of America

Pov View Of Hikers Feet And The View Of Tundra From The Doorway Of A Tent, Alaska