Son Doong Cave, Vietnam
Reed Flute Cave, Guilin, China
Underground Caves In Blue Mountains. New South Wales Australia.
Magnificent underground cave in Dordogne, Rocamadour, France More
The Kokopelli's Cave B&B in New Mexico is an underground cave hotel built into the vertical cliff of Tertiary Ojo, 70-feet below the surface of the earth.
Underwater caves in Mexico--- I've already done this. Not sure I'll ever do it again... pretty scary stuff.
✯ Underground caves of Derinkuyu, Cappadocia. An ancient city below the surface of the earth carved out by the ancients of Turkey. Read more: http://lifeadvancer.com - #lifeadvancer
10 of the World's Most Amazing Caves. When in Barbados be sure to visit Harrison's Cave to check #2 off this wish list.
Howe Caverns, New York, USA
La Jolla Sea Caves