It is a large granite dome in the shape of a mushroom, whose north and south walls contain pictographs. This particular complex must have been very important for its settlers, since numerous mortars, metates, ceramic material and lithic debris, product of the elaboration of tools, were found. In the North Panel there is a great amount of images; the predominant colors are red, white and black. It presents a sequence of superposition of motifs in which several anthropomorphic figures stand out (one of them measures more than 1.20 m, perhaps the only ones of its kind for this area), many concentric circles, an alignment of small stripes that extend along the entire edge of the ceiling and some stains. In the South Panel the motifs predominate in white and some in red, anthropomorphic figures (very probably female) very schematic and with three heads, in addition to circles and other geometric figures; the silhouettes are made in outline.