A bull caribou approaching the Park Road near Highway Pass in Denali National Park, Interior Alaska PacificStock
A row of trees in a snow covered field with a bank of cloud and blue sky in the background; Calgary, Alberta, Canada PacificStock
Professional snowboarder, Kevin Pearce, extreme heli boarding in the mountains above Haines, Southeast Alaska PacificStock
Green coniferous forest on a tranquil lake shore with red rock geological formations; Killarney, Ontario, Canada PacificStock
Snow covered evergreen trees on a snow covered hillside with blue sky and sun burst; Calgary, Alberta, Canada PacificStock
Noah Burmeister runs up hill after leaving Puntilla Lake and the Rainy Pass Checkpoint during Iditarod 2016, Alaska. PacificStock
Three Kayakers paddle the shoreline of Mendenhall Lake as morning fog clears, Tongass National Forest, Juneau, Alaska. PacificStock
Detail of water cascading down dark rock on Bridalveil Falls in Keystone Canyon, South-central Alaska; Valdez, Alaska, United States of America PacificStock
Palm trees along the Puna coastline, near Kalapana; Island of Hawaii, Hawaii, United States of America PacificStock
A couple telemark skiing on the Ruth Glacier near the Don Sheldon Hountain House in the Alaska Range, Interior Alaska, Summer. PacificStock
The lake frozen over and snow-covered, Central Park; New York City, New York, United States of America PacificStock
Satellite view of the Ob and Yenisei rivers as they carry sediments into the Kara Sea. StocktrekImages
Surf breaks at Cape Disappointment Lighthouse; Ilwaco, Washington, United States of America PacificStock
Snowy birch and evergreen trees in atmospheric landscape during sunrise in winter, North Pole, interior Alaska; Alaska, United States of America PacificStock
Professional snowboarder, Frederik Kalbermatten, heli boarding in the mountains above Haines, Southeast Alaska PacificStock
Two red chairs on snow covered ridge overlooking frozen lake with snow covered mountain cliff in the background; Banff, Alberta, Canada PacificStock
Bison walking in the early morning through the snow, Elk Island National Park; Alberta, Canada PacificStock
A bird flies above trees under a cloudy sky and fog on the coast of Resurrection Bay, South-central Alaska; Seward, Alaska, United States of America PacificStock