A lone bison (bison bison) grazes on the buttes of Grasslands National Park; Saskatchewan, Canada PacificStock
A man walks out the entrance of an ice tunnel at the terminus of Canwell Glacier in the Alaska Range in mid-winter; Alaska, United States of America PacificStock
Aurora borealis over the Alaska Range, near Black Rapids; Alaska, United States of America PacificStock
Fresh snow on holiday bow and decorations on fence post, Christmas season; Minnesota, United States of America PacificStock
Close-up of a Sea Otter (Enhydra lutris) floating on it's back, looking towards the camera, South-central Alaska; Seward, Alaska, United States of America PacificStock
The aurora fills the sky above the historic Black Rapids Roadhouse along the Richardson Highway on a bitterly cold night; Alaska, United States of America PacificStock
Hoarfrost covers holiday decorations on a wreath, Christmas season; Minnesota, United States of America 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
The aurora glows in the sky above Donnelly Dome and a snowy, moonlit landscape, south of Delta Junction; Alaska, United States of America PacificStock