Top 11 in Top 12 Beautiful Caves are the most magnificent wonders the planet.
Arriving in the U.S. state of Kentucky, visitors must not miss the famous Mammoth cave, which is filled with attractive natural beauty. Mammoth Cave belongs to the National park of the same name, which was recognized by UNESCO in the World Natural Heritage in 1981. It has long been used by American Aboriginal people in some areas of burial. The Mammoth cave is 628 km long, it is also home to a lot of bizarre animals such as catfish, white ghost spiders and blind beetles.