• Sicily

• Regional Nature Reserves

From a geological point of view, Mt. San Calogero is a large anticline (a section of earth's crust bent by tectonic forces leading it to emerge) subsiding towards E-SE. Rather than Mt. San Calogero, it would be better to call it "Mountain System of San Calogero": as a matter of fact, it is an imposing massif consisting of limestone and dolomite rocks which have formed from the Mesozoic onward, of siliceous strata, and of the so-called numidian flysch (of sedimentary origin).