Grizzly bear silhouette at sunrise walking across a dew-covered field in Lake Clark National Park Alaska.
Aurora in night sky above Chena Hot Springs near Fairbanks Alaska.
Bull elk crossing the Madison River at sunrise in Yellowstone National Park Wyoming.
Silhouette of caribou antler with skull at sunset in Northwest Territories Canada.
Digital Manipulation of silhouette of a Quiver Tree at Sunset in the Kookerboom Forest, Keetmanshoop, Namibia.
Quiver tree at sunset in Kokerboom Forest, Namibia.
Monument Valley sunrise from The View Hotel.
Star trails with the dark night sky in the Kalahari National Park, South Africa.
Moon rise over West Mitten Butte in Monument Valley.
Silhouette of the Bass Harbour Head working lighthouse at sunset in Acadia National Park Maine.
Composite image of a polar bear silhouette at sunset and aurora reflected in Beaufort Sea, Kaktovik Alaska.
Aurora photographed on tundra in Wapusk National Park in Manitoba, Canada.
Wildebeest silhouette at sunset in the Serengeti National Park Tanzania.
This Polar Bear is walking along the shore of the Beaufort Sea near Kaktovik Alaska at sunset.
