This territory, though not very extensive, shows a remarkable variety of geomorphological landscapes; due to a prolonged geological and paleogeographic evolution that has witnessed many important tectonic, volcanic, sedimentary and morphogenetic events that can be traced back about 300 million years ago, or at the end of the Paleozoic Era, but with a higher incidence in the last 25 million years or so.
This pleasant landscape is dominated by the characteristic isolated truncated cone block of Mount Santu Antine (591 m a.s.l.). It too, like the Giara, was carved in Miocene marl and bears at the top a residual limb of the Pliocene basalt.
The town of Genoni lies on the south-east side of this hill, in a beautiful and little known position, the one and the other together forming a picturesque landscape combination that is now a classic on the island and strongly characterizing this territory.
The territory has a long human presence attested by a considerable number of nuraghi, finds and a sacred well.