One of themost impressive and important archaeological sites of Prehistoric Sardiniarises in a wide sandy schistose plain called PranuMutteddu, in the Gerrei region. It was probably a sacred area, partly destined to the ancestors worship cult (as monumentaltombs attest), partly dedicated to otherrites. Megalithic burials are surrounded by a great number of menhir,the greatest concentration in Sardinia; there are also some domus de janas tombs (literally %u201Cfairy house%u201D or %u201Cwitch house%u201D).
The mostcharacteristic burials, built of local sandstone, are formed by two or threestone concentric rings. In the middle is the burial chamber, built of bigblocks, preceded by a corridor with big slabs stuck vertically into the groundand covered with a plat band (horizontal slabs). The sixty menhir arescattered, in couples, lined up (up to twenty), in smallgroups or isolated, in front or inside the tombs. The most impressive is tombII, which probably belonged to a divinizedchief. It shows some typical elements of circular tombs and domus de janas tombs. It is made of twoenormous stone blocks one behind the other, connected to other rooms built ofsmaller blocks. After the deposition of the corpse, the structure was coveredby a mound and surrounded by stone circles; a small menhir was in frontof the entrance and another circle (30-35m diameter) was made all around. Thisarea was frequented during the Neolithic and Eneolithic Age, as thearchaeological finds from the Cultura di Ozieri attest (3200- 2800 BC).
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