reindeer, Rangifer tarandus, Denali National park, Alaska, USA

Snowcapped mountain under blue sky, Mt Eielson, Denali National Park, Alaska, USA

Trees in field with snowcapped mountain range in background, Denali National Park, Alaska, USA

Mosses on rocks in river, Denali National Park, Alaska, USA

Dwarf Birch (Betula nana) in field, Denali National Park, Alaska, USA

Lake in front of snow covered mountain range, Mt McKinley, Wonder Lake, Denali National Park, Alaska, USA

European elk (Alces alces) standing in forest, Denali National Park, Alaska, USA

Dall Sheep (Ovis dalli), Denali National Park, USA, portrait

Reflection of mountain in water, Talbot Lake, Miette Range, Jasper National Park, Alberta, Canada

Dwarf Birch (Betula nana) and Alpine Bearberry (Arctostaphylos alpinus) in field, Denali National Park, Alaska, USA

Close-up of European elk (Alces alces) eating leaves from plant, Denali National Park, Alaska, USA

Arctic Willow (Salix polaris) and Alpine Bearberry (Arctostaphylos alpinus) in field, Denali National Park, Alaska, USA

Reflection of trees in water, Yellowstone National Park, USA

Reflection of clouds and trees in water, Bear Lake, Rocky Mountain National Park, Holy Cross Wilderness, Colorado, USA

Caribou (Rangifer tarandus) reindeer standing in field, Mt McKinley, Denali national park, Alaska, USA

Lake with mountain in background, Grand Teton National Park, Wyoming, USA

Reflection of mountains in lake, Yellowstone Lake, Yellowstone National Park, Wyoming, USA

Storm clouds over snowcapped mountain, Grand Teton, Grand Teton National Park, Wyoming, USA

High angle view of waterfall, Yellowstone National Park, Wyoming, USA

High angle view of waterfall, Yellowstone National Park, Wyoming, USA

Bushes and trees in desert, Great Sand Dunes National Park, Colorado, USA

High angle view of a river, Capitol Reef National Park, Utah, USA

Steam emerging from hot spring, Grand Prismatic Spring, Yellowstone National Park, Wyoming, USA

High angle view of river passing through canyon, Colorado River, Grand Canyon National Park, Arizona, USA

Reflection of mountain in water, Denali National Park, Alaska, USA