Marble Caves in Chile

Ptarmigan Lake, Glacier National Park. Via The Real Good Times blog

Arizona's Antelope Canyon

Beautiful Picture of the San Rafael falls.

Great Smoky Mountains, Tennessee

Big Lagoon, Miniloc Island

Everest against the Milky Way

Great pic of Niagara Falls.

Lightning Strikes

Rio Celeste, Costa Rica

Caved in cave. Devetashka, Bulgaria.

Soufrière, St. Lucia, The Caribbean

Landmannalaugur, Iceland. Beautiful rhyolite hills.