The Tip of the Iceburg, Ralph A Clevenger - The image is a composite of four different photos: the iceberg top was shot in Antarctica; the iceberg bottom was shot in Alaska (and was taken above the water); and the sky and water shots are from California.
Marble Cave, Chile Chico, Chile – The most spectacular caves network in the world and this Marble Cathedral is absolutely magnificent. It’s located in Patagonia, Chile on the second largest freshwater lake in South America, General Carrera.
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one. (Visit Skaftafell National Park in Iceland.