Menhir di Genna Prunas, Megalithic monument in Guspini, Italy

Menhir di Genna Prunas is an upright basalt stone column located near Guspini in Sardinia. The stone stands about 1.70 meters tall, measures roughly 60 centimeters wide at its base, and tapers toward a rounded top.

This stone dates to the Ozieri culture of the fourth millennium BCE and represents an early form of monumental construction in the region. It stands along kilometer 99 of the SS126 road, marking a significant period in Sardinia's past.

Cup marks cover the stone's surface on all sides, suggesting that people once gathered here for rituals or to observe the sky. The marks indicate this was more than just a boundary stone, but a place of spiritual importance.

The menhir sits on private agricultural land and is under the supervision of the local archaeological authority, so checking ahead is worthwhile. Wear sturdy shoes when visiting, as the path to reach it crosses uneven farming ground.

The cup marks are cut into the basalt on all four sides of the stone, not just one face. Italian sources count about thirty, while the French Wikipedia mentions around ten on a single face, so the exact number remains uncertain.