Moon rise over West Mitten Butte in Monument Valley.
Grizzly bear silhouette at sunrise walking across a dew-covered field in Lake Clark National Park Alaska.
Composite image of a polar bear silhouette at sunset and aurora reflected in Beaufort Sea, Kaktovik Alaska.
Digital Manipulation of silhouette of a Quiver Tree at Sunset in the Kookerboom Forest, Keetmanshoop, Namibia.
Aurora photographed on tundra in Wapusk National Park in Manitoba, Canada.
Aurora in night sky above Chena Hot Springs near Fairbanks Alaska.
Wildebeest silhouette at sunset in the Serengeti National Park Tanzania.
Quiver tree at sunset in Kokerboom Forest, Namibia.
