The petroglyph is one of Galicia’s most unique artistic expressions, an example of open-air rock engravings which, after the Bronze era, ritualised, marked or compartmentalised the landscape. Various rocky outcrops with engravings can be seen at the entrance to the site, one standing out from the rest, with different types of motifs, notably concentric semicircles, as well as oval or kidney-shaped, sometimes even fan-shaped, figures, some similar to those that have been found in other parts of the Atlantic coastline, notably the dolmen on Gavrinis Island, in Brittany, France.

The defensive systems of Iron Age settlements were structured from their very beginnings. Trenches, parapets and stone walls comprised these defensive systems. A V ditch—although filled in today by sediment—and a stone wall are still preserved here. The wall is two metres wide and it was constructed by taking advantage of the rocky outcrop on which the hillfort sat. Externally, the wall is tiered.

An open space, demarcated by a wall and the abrupt drop down to the sea, with a stone boulder bearing a large cup mark, or lacus, which some researchers associate with a place of ritual on account of its location with respect to the sea and the sunset. An abundance of archaeological items characteristic of the Late Bronze Age and Iron Age I related to structures made from perishable materials (wood and straw) were found on this terrace during excavation work.

During the excavations carried out here, a greater number of structures were found, not all of which are dated in the same period, rather two phases of occupation can be distinguished: one, characterised by circular huts, dwellings with plastered walls and typical of Iron Age II, as well as packed clay or weathered granite pavements; and another, defined by the existence of a large midden with ceramic fragments where indigenous and Roman items appeared together. 

The highest point of the settlement, with a visual command of the site and the stretch of coastline that extends southwards. It is occupied for the most part by large granite boulders on which it would have been impossible to build any type of structure. Several of these rocks display, once again, engravings, substantially eroded today. This conferred a certain symbolic status on the croa, or acropolis.