The cave tours are guided and run for an hour. Through audiovisuals and recreations with figures, they explain how our ancestors lived. 3,950 metres of the cave have been uncovered, most of which is beneath L’Espluga de Francolí town centre. If you’re less interested in the historical element, you can opt for the Adventure Route. Dressed in a neoprene suit, helmet and visor, we walk along the underground river, sometimes with water up to our waists, until we reach the Pou de la Biela room, where we pass a kind of siphon before turning around. The route takes about three hours and the temperature inside the cave is quite stable, between 14 and 16 degrees.