Glasshouse Mountains, Queensland, Australia

Danxia landform, Zhangye, China

The Subway, Zion National Park- Utah

Peyto Lake, Alberta

A desert in the middle of Iran. Photo by Arash Karimi

Kabardino-Balkaria Alpine Reserve, Russia

Reed Flute Cave, China

Madeira Island, Portugal

Saar River, Germany

Kulusuk, Greenland

Coeur d'Alene Lake, Idaho

Mountain in Gates of the Arctic National Park, Alaska

Gouffre de Padirac - France