Darvaza gas crater, Turkmenistan

The coastline of Lake Urmia, in Iran.

Black Hills, South Dakota

Glen Canyon, Utah

Lake Mývatn, Iceland

North Cascades Sunrise

Hill fortress of Sigiriya, Sri Lanka

Five dead trees in front of a massive sanddune

Li River Valley, Guangxi, Southern China

Cottage in Wales

Sun through the moss, Washington USA

Waterfalls of Iguazu National Park, Argentina

Arenal, Costa Rica