|The realization of the necropolis, the 'domus de janas' pattern, has been favoured by the structure of the rocks, sometimes tender and solid, which has been dug through with andesite mattocks in the Neo-Aeneolithic Period between the 4th Millennium and 2nd Millennium B.C.|
The architectural types are various. There are oven tombs, shft tombs and above all the 'Tomb of the Horns', whose oven vault has got horns stylisations sculpted on it and a bull-shaped head carved on the entrance. Straightforward tombs are monumental in size. The so-called 'spiral tomb' has extraordinary motives: festoons, spirals, curvilinear patterns, false gates to be considered as passages to the next world, bull-shaped heads, all as faith elements, unquestionable symptoms of a hearty religiousness expressed in a simple manner but rich in spiritual and artistic elements.