Hundidero Cave is the northern entrance to the cave system called Hundidero-Gato, although it is commonly called Gato after its southern entrance. This is the most important system in Andalusia with more than 9000 surveyed metres, and one of the largest systems in Spain. It has perennial streams, chasms, lakes and sumps and can be dangerous due to heavy rain in the area, which makes the underground river bed change fast. Certain deaths are linked to this phenomena and the water temperature.

The caves are of cultural interest due to their paintings, and they are also a natural monument.

Natural Monuments: Meaning

Natural Monuments are places or parts of nature which are considered to be significantly unique, rare or beautiful, and therefore are to be protected.

Natural monuments can also be geological formations, palaeontological sites and other geological structures that are of special interest for science, culture or landscape. They can be geological, biotic, geographical, eco-cultural and mixed according to the criteria presented in Article 4 of the Government Decree 225/1999 with regulations regarding the arrangement and management of each of them.

The Council of the Regional Government of Andalusia has authority to establish certain spot or part of nature as a Natural Monument.