11. Enchanted well
Situated in Brazil, Enchanted well is a part from of theChapadaDiamantina National Park. Most of the parts of this cave are formed by the rivers flowing through the region. The river through the cave is an additional beauty and adventure in the cave. Most of the rivers flowing through the region run red. It is because of the tannin in the water. The river contains both gold and diamond, which make the cave even more desirable.
Image Credit: flickr