Reed Flute Cave - Guilin, China
Located in the Guangxi region of southern China, the Reed Flute Cave is a natural limestone cave over 180 million years old and known for its multicolored lighting. It has over 70 inscriptions in the cave, some dating back to 792AD.
Luray Caverns - Virginia
Discovered in 1878, the Luray Caverns is the largest cave in the eastern US where visitors can see bizzare formations like the "Throne Room", "Giant's Hall" and "Fried Eggs".
Green Grotto Caves - Jamaica
A large labyrinth limestone cave located near Discovery Bay, is named for the green algae covering its walls. The caves are historical rich from the first Jamaicans, to the takeover of the English, to the two world wars.
Carlsbad Caverns - New Mexico
Below the rugged ground of rocky slopes, shrubbery and cactus lies 118 caves in the Carlsbad Caverns. The caverns host the Big Room which is the third largest chamber in North America and the seventh in the world.
The Baths - Virgin Islands
Giant boulders brought to surface by volcanic eruption are scattered about forming tranquil pools, tunnels, arches and beautiful grottos.
Ruby Falls - Tennessee
Ruby Falls located within Lookout Mountain, is Americas highest underground waterfall at over 1120 feet below the surface.
Eisriesenwelt Ice Caves - Austria
Eisriesenwelt is the German word for World of the Ice Giants. The cave is inside Hochkogel Mountain of the Alps and is the largest ice cave in the world.
Blue Grotto - Capri, Italy
The Blue Grotto is a sea cave located in southern Italy where the sunlight passes through underwater cavities and causes a rich blue reflection upon the water, illuminating the cavern. A tiny entrance allows passenger to come through in small groups by tiny boats. This blue grotto is one of several, another is located just off the coast of Split, Croatia.
Lascaux Caves - France
We've all heard about the Lascaux Caves in southwestern France as the setting of Paleolithic cave paintings. Discovered by a couple of young boys, the cave paintings are estimated to be 17,300 years old. Fungus and black mold have begun to cover the art due to human introduced moisture since the 1990s, they may not be around much longer.
Cave of Crystals - Chihuahua Mexico
Connected to the Naica Mine, the main chamber contains giant selenite crystals, some of the largest found in the world. The cave is extremely hot, reaching temperatures of 138F, so proper protection is recommended.
Waitomo Glowworm Caves - New Zealand
The glowworm species, Arachnocampa, is found exclusively on New Zealand and is responsible for the illumination of the cave.
Cave of the Swallows - Mexico
The Cave of the Swallows is an open air pit cave with a 1214 free fall drop, making it the largest shaft cave in the world. A skyscrapper can easily fit inside of it.