Banff, Canada

Blue Ice Cave, Antarctica, December 2011.

Rio Secreto, Riviera Maya, Mexixo

Rock formation in Moab, Grand Canyon, Utah

Iguazu Falls, Brazil

New Melones Lake, Sonora, CA

Sun set in Disco Bay, West Greenland

The sky in the ground. Yellowstone National Park

Natural limestone structures at Nambung National Park, Western Australia

Torres del Paine National Park, Patagonia, Chile

Some scenery in Iceland.

The Cobbler, Arrochar Alps, Scotland

Badlands National Park, South Dakota