Cuevas del Drach

The Caves of Drach are four great caves that are located in the island of Majorca, Balearic Islands, Spain, extending to a depth of 25 m and reaching approximately 2.4 km in length. They are in the municipality of Manacor, near the locality of Porto Cristo. They were first mentioned in a letter dated 1338. The four caves, called Black Cave, White Cave, Cave of Luis Salvador, and Cave of the French... (Wikipedia)