Richat Structure (Eye of the Sahara)

Trogir, Croatia

Rocky Mountain National Park

Yellowstone Canyon, WY

Zhangjiajie National Forest Park, China 3

Blue Ice Cave, Antarctica, December 2011.

Stream at Muir Woods

Fountain Paint Pot in Yellowstone National Park, Montana

Grand Canyon Skywalk

Mountain Range

Badlands, South Dakota

Meadow @ Grand Teton National Park

Old Man's Cave - Hocking Hills, Ohio