Caved in cave. Devetashka, Bulgaria.

Old Faithful, Yellowstone National Park

The Moeraki Boulders of New Zealand.

Bagan sunset, Myanmar

Three Sisters, Blue Mountains World Heritage area NSW Australia

Torres del Paine National Park, Patagonia, Chile

Purple landscape, Netherlands, Veluwe

Beach, Lekeitio, Basque Country, Spain

Stunning pic of Monument Valley. (does anyone know how this was formed?)

A rich view of Earth

A shallow branch of The Rhine River next to Mt. Rheinwald , Switzerland

Turquoise Ice: Northern Lake Baikal, Russia

Iliamna Volcano, Alaska. Photo by Michael Melford