A sanctuary inside a cave stretching back 20 metres in the town of Altura, on one of the highest mountains in the Sierra Calderona mountain range. You enter via a set of steps leading to the chapel of the Virgin, built in the 17th century in the depths of the cave and closed off by railings. It's said that the Virgin appeared here in 1516 and a number of miracles occurred that have been recognised by the Vatican.
It's a charming spot, interesting to see and with good views along the access route.