Aerial view of main branch Columbia Glacier, Prince William Sound, South-central Alaska; Alaska, United States of America

Coxe Glacier in Barry Arm of Prince William Sound, South-central Alaska; Alaska, United States of America

Aerial view of Colony Glacier with Chugach Mountains in background and Lake George with Colony Point in foreground, South-central Alaska; Alaska, United States of America

Cascade, Barry and Coxe Glaciers in Barry Arm of Prince William Sound, South-central Alaska; Alaska, United States of America

Aerial view of west branch of Columbia Glacier (left) with main branch of Columbia Glacier (right) emptying into Columbia Bay, Prince William Sound, South-central Alaska; Alaska, United States of America

Steller sea lions (Eumetopias jubatus) hauled out on rocks at South Marble Island, big bull in the centre surrounded by cows, Glacier Bay National Park, Alaska, United States of America

Tour boat in front of Margerie Glacier, Tarr Inlet, Glacier Bay National Park and Preserve, Southeast Alaska; Alaska, United States of America

Holland America cruise ship in front of Margerie Glacier, Tarr Inlet, Glacier Bay National Park and Preserve, Southeast Alaska; Alaska, United States of America

Holland America cruise ship in front of Margerie Glacier, Tarr Inlet, Glacier Bay National Park and Preserve, Southeast Alaska; Alaska, United States of America

Holland America cruise ship in front of Margerie Glacier, Tarr Inlet, Glacier Bay National Park and Preserve, Southeast Alaska; Alaska, United States of America

Tourists on board the Baranof Wind sightseeing at Margerie Glacier, Tarr Inlet, Glacier Bay National Park and Preserve, Southeast Alaska; Alaska, United States of America

Passengers line the rails on the bow of the Holland America cruise ship Volendam in upper Tarr Inlet in front of Margerie Glacier, Glacier Bay National Park and Preserve, Southeast Alaska; Alaska, United States of America

Northern Lights above the Chugach Mountains, South of Girdwood, across Knik Arm; Alaska, United States of America

Snowboarding on the snow covered mountains; Haines, Alaska, United States of America

View of the south face of Mt. McKinley with the Chulitna River in the foreground, Denali National Park; Alaska, United States of America

A group of people camping near Powerline Pass in the Chugach State Park on a summer day in South Central Alaska; Alaska, United States of America

Woman talking on a cell phone in front of Shoup glacier, Shoup Bay State Marine Park, Prince William Sound; Valdez, Alaska, United States of America

Mother with son and daughter sitting in front of Shoup glacier, Shoup Bay State Marine Park, Prince William Sound; Valdez, Alaska, United States of America

Northern Lights above a starry night sky in winter; Alaska, United States of America

Eagle River Valley on a sunny winter day in South Central Alaska with Mount Yukla in the background, Chugach State Park; Alaska, United States of America

Brown bear (ursus arctos) resting by the water's edge; Alaska united states of america

Man talking on a cell phone in front of Shoup glacier, Shoup Bay State Marine Park, Prince William Sound; Valdez, Alaska, United States of America

Brown bear (ursus arctos) resting by the water's edge; Alaska united states of america

Couple taking a self-portrait with a cell phone in front of Shoup glacier, Shoup Bay State Marine Park, Prince William Sound; Valdez, Alaska, United States of America

Front face of Colony Glacier, South-central Alaska; Alaska, United States of America