Cova de l'Amfiteatre

A large portal open to the sea, a remnant of a larger cavity that encompasses various accessible karst fragments that develop beneath ceilings with domes and dissolution marks. The two large openings located to the west were not visited due to the strong swell. In one of them, light seems to be glimpsed at the bottom, which suggests that it may pass through the rocky headland. The central cavity is a cave formed by two modest V-shaped galleries. The left one ends in a small pebble beach. In the other, the water is deeper and fills it completely. To the east there is a significant fissure completely refilled with well-ordered sediments.

From the larger cavity, speleothems remain on the ceiling as witnesses. In the eastern fissure there are intercalated stalagmitic crusts.

The right gallery of the central cavity has the deeper water and it fills it completely.

From the Pas de la Mala Dona or else leaving from the entrance of the port of Garraf, one must go to the coll de Corralets. On arriving, follow the path which, descending steeply, leaves us above the false railway tunnel. We continue westward until we find a rocky spur that allows access to the route. Next, one must descend about 25 m, first by a steep ramp followed by a couple of steps which leave us on some rocks. Shortly after, one must enter the water and swim about thirty metres to reach the mouths.