Cougar Mountain, Washington

Blue River, Greenland

A lake in the Uinta Mountains, Utah

Sunset Cliffs, San Diego, California

Pellew Island, Jamaica.

The Reed Flute Cave in China

The Great Blue Hole in Belize - A large submarine sinkhole which is over 984 feet across and 407 feet deep.

The coastline of Lake Urmia, in Iran.

Longhushan Mountains in China

Verzasca river, Ticino, Switzerland

Lone tree, landscape from New Zealand

Aldeyjarfoss, Iceland. This waterfall along with its valley is destined to be drowned soon with the construction of a dam.

Turquoise ice at Lake Baikal, by Alexey Trofimov