This spectacular cave, which can be visited throughout the year, is located in the cliffs of Port de Sant Miquel. The guided tour, which lasts about 40 minutes, enables one to discover the geological and historical characteristics of a cavity dating back around 100,000 years, which has passed through glaciations and tropical heat. Today it is nearly fossilized, except in the deepest galleries, where the continuous dripping still forms stalactites and stalagmites. People have been aware of the cave’s existence for decades, as it was used by smugglers to hid merchandise which they hoisted up from an opening located at a height of about 10 metres.