Travel to the town of Porto Cristo to explore the mysterious Drach Caves, home to the largest underground lake in the world. The Drach Caves, whose name translates to “Dragon Caves,” consist of four interconnected caverns called Black Cave, White Cave, Cave of Luis Salvador, and Cave of the French. Here, you’ll witness a natural phenomenon where lights and shadows play with one another to create abstract images on the cavern walls. This tour is provided by an operator that has been third-party certified to meet the Global Sustainable Tourism Council's Criteria for Tour Operators.