Boulders and sunset in Joshua Tree National Park. The warm sunlight gently lights unusual boulder formations at Jumbo Rocks in Joshua Tree National Park, California.
Location: Joshua Tree National Park, California
Image ID: 26726
Sky Rock at night, light by moonlight with stars in the clear night sky above. Sky Rock petroglyphs near Bishop, California. Hidden atop an enormous boulder in the Volcanic Tablelands lies Sky Rock, a set of petroglyphs that face the sky. These superb examples of native American petroglyph artwork are thought to be Paiute in origin, but little is known about them.
Image ID: 28505
Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25878
Canyon X, a spectacular slot canyon near Page, Arizona. Slot canyons are formed when water and wind erode a cut through a (usually sandstone) mesa, producing a very narrow passage that may be as slim as a few feet and a hundred feet or more in height.
Location: Page, Arizona
Image ID: 36009