Sunset over mountains at Big Meadows, Blue Ridge Mountains, Virginia A view of a wild horse in a field of wildflowers in the Pryor Mountains, Montana Cormorant fisherman poles a bamboo raft near limestone karst mountains, Li River, People's Republic of China Autumn view shows fallen leaves on rocks next to a mountain stream South Dakotas famed Mount Rushmore National Monument Maligne Lake, which is the largest and deepest lake in Alberta's Jasper National Park, Canada Scenic view of a lake in Jasper National Park in Canada Cirque of the Towers, Lonesome Lake, Popo Agie Wilderness, Wyoming Banff Park landscape with fog and reflections, Banff National Park, Alberta, Canada A clearing storm at dawn over Saint Mary Lake View of Moraine Lake with low-lying clouds at one end, Alberta, Canada An overpass for wildlife spans the Trans Canada Highway in Banff, Alberta, Canada A hiker silhouetted against snow-covered Mount McKinley, Denali National Park, Alaska Sculpted icebergs under clouds near the shore of Couverviller Island. A view of cliffs from the Cloud Peak Skyway, Wyoming A butte often painted by Georgia OKeeffe on her Ghost Ranch Sunset falls on the Salar de Atacama salt flat, Atacama Desert, Chile A view of Death Lake and the surrounding forests and cliffs, Northwest Territories, Canada A herd of pronghorns graze near gas drilling rigs sunset, Pinedale, Wyoming The yellow leaves of fall frame a rock formation. Single lightning bolt strikes in the desert during monsoon season Painted Desert, Petrified Forest National Park, Arizona. Adelie penguins walk on a beach where a cruise ship is anchored. Quaking Aspen and Ponderosa Pine trees display fall colors.