It is a mixed structure consisting of a burial chamber with a corridor excavated in the granite rock of the southern slope of the hill, with a vestibule or vestibule with megalithic access. The chamber has a semicircular floor plan (5m length x 3m width x 2m height) without a roof, given that it collapsed above the archaeological level. The corridor (2.25m length x 1.60m width x 1.40m height), with an elongated floor plan, connects the hall with the bedroom. The antechamber (1.75m width x 1m length), with a trapezoidal plan, is made up of three large slabs arranged and nailed to the subsoil (the slab-door was documented to have been displaced from its original place). The archaeological intervention documented three different stratigraphic levels: the surface level, made up of soil and scattered bone remains, a second level made up of the stone blocks that formed the original vault that covered the chamber and the corridor, and a third level where it was documented abundance of human bone remains (affected by the demolition) and much of the documented archaeological material. Specifically, between 195 and 205 buried individuals of both sexes were documented, mostly between 20 and 40 years old, although there were also children. Among these remains were documented 68 flint arrowheads, several fragments of bell-shaped pottery, two manual stone mills and various faunal remains, among others. The archaeological research concluded that an accidental event, probably a war conflict between groups, led to the death of a significant volume of the population.
Chronologically, the site belongs to the Chalcolithic period (2200-1800 BC).