Sunrise over thermal pools in Yellowstone.

Bimmah Sinkhole, Oman

Glacier Bay National Park, Alaska

Nahanni National Park

Cathedral Cove, Coromandel Peninsula, New Zealand

Slave's Edge near Leitisvatn in the Faroe Islands

Brecon Beacons, Wales

Hamilton Pool, Texas

Beach in South Australia

The Gateway - Bryce Canyon National Park, Utah

Erosion on the slopes of a volcano near Ankisabe, Madagascar

Red Sunset and Flowers; location unknown

Yamdrok-tso Lake, Tibet.