Standing head and shoulders above the crowd, “the Mountain” dominates the of landscape Denali National Park and central Alaska. On clear days, Denali can be seen from as far away as Anchorage and Fairbanks. While clear skies are common in deep winter, with intense cold locking up moisture, summer skies are often cloudy. This photo taken in late summer shows Denali looming large. If you look closely, you can even see a moose on the tundra. Photo by Jay Elhard, National Park Service.

The forested wetlands of Pocosin Lakes National Wildlife Refuge in North Carolina provide excellent habitat for migratory birds. Large numbers of waterfowl concentrate on this relatively small area in the winter with peak numbers of well over 100,000 gathering in December and January. It is also home to the only population of wild, free roaming red wolves in the world and supports several clusters of endangered red cockaded woodpeckers. Here, a large flock of tundra swans fly over the refuge at sunset. Photo by Ginny P. Gillam (http://ift.tt/18oFfjl).

On this day in 1915, Rocky Mountain National Park in Colorado officially became a national park. Even in cold weather, you can explore the park’s spectacular mountain environments by snowshoeing, cross-country skiing, sledding and wildlife watching. In fact, winter is an especially good time to look for elk, mule deer, moose and other large mammals. Sunrise photo of Dream Lake in 2014 by C. Brindle, National Park Service.