The underground megalithic chamber of Valencina de la Concepción

In the village of Valencina de la Concepción, a megalithic site known as the Dólmen de Matarrubilla was discovered in 1917. The site was excavated in 1918 and 1955 and is now accessed through a modern gate structure.

The completely underground Andalusian passage consists of a long corridor leading to a round chamber about 2 meters high. The chamber ceiling is a corbelled vault finished with a large granite slab. In the center of the chamber sits a black marble stone with a square depression about 10 cm deep, which is identified as an altar or offering table. Large stones of various shapes are also found in the chambers of the dolmens of Antequera.

The passage, which is approximately 2 meters high, is composed of layers of rubble and clay and is covered with limestone slabs. Its orientation toward the west distinguishes it from the entrances of other megalithic structures. Nearby, the Dólmen de Ontiveros was discovered in 1948 under a modern building, where traces of ocher pigment remain in the excavated section.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons