Man climbing a snow ridge for back country skiing, Turnagain Pass, Kenai Mountains, Southcentral Alaska, Winter PacificStock
Female backpacker enjoying the view from the Harding Icefield Trail near Seward, Kenai Fjords National Park, Kenai Peninsula, Southcentral Alaska, Summer, HDR PacificStock
Hiker on a hillside in front of Mt. McKinley and Muldrow Glacier, Denali National Park, Interior Alaska, summer PacificStock
Bighorn ram (ovis canadensis) walking through snowy meadow, Shoshone National Forest; Wyoming, United States of America PacificStock
A hiker makes his way over the rocky river bottom of the Virgin River Narrows, a majestic portion of one of America's most famous national treasures, Zion National Park; Utah, United States of America PacificStock