20. Dongzhong Cave – Guizhou, China
Literally means “in cave” in Chinese, this is not just an ordinary cave as actually houses a school! Situated in Ziyun County in the province of Guizhou in China, the enourmous cave opened as a school in 1984 with 186 students and 8 teachers. Carved out of the mountain by wind, water, seismic shifts and other natural forces for thousands of years, it now houses rooms, small buildings, and recreational areas for the students.
15. Deer Cave – Borneo, Malaysia
Located near Miri, Sarawak in Malaysian Borneo, it is a cave attraction that is part of the Gunung Mulu National Park. Also known by the locals as â€˜Gua Payau’ or â€˜Gua Rusa,’ it received its name from the deer that came to lick its salt-bearing rocks and used it as their shelter. First discovered in 1961 by G.E. Wilford, it was further surveyed in 1978 to determine its measurements of 174 m wide and 122m high, while the main entrance measured at 146 m.
10. Fantastic Cave Pit – Georgia, USA
Located in Ellison Caves, east of Lafayette, Georgia, the Fantastic cave is 586 ft deep. Known as the deepest cave in the United States, it is big enough to hold the Washington Monument.
5. Cave of Crystals – Chihuahua, Mexico
This was just recently discovered in 2000 when scientists discovered the chasm below after drilling an aquifer and pumping out tens of thousands of gallons of water. A cave that is connected to the Naica Mine in Chihuahua, Mexico, its crystal formations are mind bogglingly large and measure over 30 feet in height and 4 feet in diameter. Formed due to the water-source that is rich in calcium sulphate, it was heated by an infusion of magma making the cave extremely hot and people can only endure ten minutes of exposure with proper protection. This is also the reason why most parts of the cave are unexplored.