The Sacred Well
The complex includes a sacred well around which have a building isodomic structure and several huts built at different times. The well temple is made - according to architectural modules recurrent in this type of monuments - from a cell circular accessed via a ladder directed to West; The building does not have, conversely, the vestibule that typically precedes the stairwell. The room of the pit (diam. 2 m), covered in "tholos" and today without coverage (alt. Maximum Residual 4.40 m), is carved into the rock and has the floor slightly concave rather irregular. The staircase descends to the room with fourteen steps, of which eleven are made with limestone slabs and the last three carved into the rock. The compartment, now devoid of cover, follows a semicircular course, unusual in this type monumental. At about seven meters from the well is located in the construction work isodoma. The building, stored for one row, has a large circular chamber (diam. 6 m), from which branches off a corridor splayed (length. 9 m). It is hard to say what was the function of the building. A monolith cylindrical (diam. 0.80 m; alt. 0.55 m) in limestone is located between the two main monuments, devoid of the top and maybe interpreted as an altar. Another structure is present at the edge of the archaeological SW: it is a cistern carved into the rock and used again, perhaps in the Middle Ages, as other buildings are developed beyond the excavated area documenting the complex articulation and extension of the site. The site is dated from the early Bronze Age and the first Iron Age. In this site were found many artifacts and numerous bronzes, especially around the monolith, which are now in the Museum of Sanna in Sassari, including a model of nuraghe with four towers and a tribal leader carrying a spear with a ram or mouflon on a leash, bones of sacrificed animals and materials from the Roman period that witnessed the prolonged use of the area. The site was excavated in 1985-1988 by Daniela Rovina.
Getting there: From Sorso, follow the signs for the fountain of Billellera. Arriving at the fountain continue for another 500 meters until you get to the fork, keep to the left and continue on the road to natural background. Continue for 1 km and then turn right, continue for another 300 meters until you get to the site that you will find on your right, easily recognizable because it is completely fenced.