Grande Grotta, Kalymnos, Greece.

Kulusuk, Greenland

Got this one in American Basin, CO

Lac d'Allos in France's Mercantour National Park -

Lagoa do fogo, Azores

Morondova, Madagascar

Soufrière, St. Lucia, The Caribbean

Sunset at Pfeiffer State Beach -

Erosion on the slopes of a volcano near Ankisabe, Madagascar

Big Rozsutec

Jagged cliff in The Apostle Islands located in Lake Superior, Wisconsin

Los Roques, Venezuela

Lower Lewis River Falls, Washington