The area in which our park is found does it departs of the so-called one “buttress pliocenico” (rich of sea fossils), an extension of around 575 hectares destined soon protected area to becoming (Reserve of the Buttress pliocenico). it deals with a sedimentary formation primarily constituted by sandstone that it extends him among the valleys of the Rhine and the Idice.
In the Pliocene (4 – 2 million years ago) the Appennino was nearly completely emerged and surrounded by the Mediterranean sea: it is likely that the formation of the buttress has had origin from following overflows from the sea of the consequential sedimentations from the rivers Sect, Rhine, Savena and Idice that flowed in the lowland then covered of water. The rocky substratum of these reliefs is composed (to eg. Mountain Adone – 655 mt, Mountain of the Ants – 638 ms, Mountain Mario 466 ms, Fortress of Badolo 475 ms, the Monk’s Mountain – 547 ms, Stone of Glossina) of coarse sandstones, of a gilded yellow color, while to the base the grounds are composed from soft clays, and often ploughed by precipises, all however rich of sea fossils.