View Through Stone Doorway of the Inca Ruins of Machu Picchu in the Andes Mountains, Peru

Llama Rests Overlooking Ruins of Machu Picchu in the Andes Mountains, Peru

Ancient Inca Tomb at Sunset, Near Lake Titicaca, Peru

Colorful Architectural Detail of Wall and Stairs, Near Cusco, Peru

Scenic View of the Ruins of Machu Picchu in the Andes Mountains, Peru

Juvenile Grizzly Plays with Tree Branch in Winter, Alaska, USA

Grizzly Bear Licks Dead Tree Branch, Alaska, USA

Arctic Fox in Winter Coat, Alaska, USA

Arctic Fox in Winter Coat, Alaska, USA

Horseshoe Bend Showing Erosion by the Colorado River, Arizona, USA

Horseshoe Bend Showing Erosion by the Colorado River, Arizona, USA

Hills with Poppies and Lupine with Double Rainbow Near Gorman, California, USA