Melissani Lake, Ionian Island's; Greece

Blyde River Canyon, South Africa

Iguazu Falls, Argentina and Brazil

Light and Shadow - Santa Rosa Plateau

Hole in the Wall, South Africa

Multnomah Falls

Natural limestone structures at Nambung National Park, Western Australia

Kaieteur Falls, Guyana

Windswept Lady, Monument Valley, Arizona

Painted Desert, John Day Fossil Beds National Monument

Kaaterskill Falls

Grand Lac seen from Col de la Ponsonnière, Hautes-Alpes, France

Mammoth Hot Springs, Yellowstone National Park