The Dragon Caves are one of Mallorca`s top tourist attractions. They were mapped by the French geologist Edouard Martel in the 1890s. Led by a guide on a one hour tour, visitors follow a path to caverns, from where you can see ravines and thousands of bizarre stalacites and stalagmites. There are subterranean lakes and one is over 500 feet long. The tour ends with a concert from a rowing boat.