 Through its exhibits, the hall teaches visitors how fossilization occurs, both in water environment and in terrestrial environment.The hall contains a showcase with Rudists, ancient marine bivalves living on sea bottom became extinct 65 million years ago, that are the most common fossils in Karst calcareous rocks.Another showcase displays how the Province of Trieste and, especially, the Karst have developed from the geopaleontologic point of view.