The Bismantova Rock is a mountain that belongs to the Reggiano Apennines, which is just over 1,000 meters above sea level. It is definitely a very unique geological formation in its shape and structure, which can only be admired and observed carefully. The Bismantova Rock has in fact a precise geological history, which distinguishes and differentiates it from other mountains.
In its formation we find types of very different kinds of rocks, such as limestones, sandstones, clay and marl, forming the geological skeleton of stone, giving it a precise look. The shape of the stone, which stands isolated and distant from the other mountains of the Apennines, is conspicuously square and the walls, rocky and steep, reach considerable heights.
The limestones form the bulk of the shape and rest on marl and clay. Its slopes have only a slight inclination and on them you can notice the signs of landslides. The mountain is part of the territory of the National Park of the Tuscan-Emilian Apennines.
Going behind the Stone walls you will be able to notice particular points where the transition of marls and calcarenitis is visible. These differences between the different types of stones are also visible due to the change of color and hue between a rock type and another. The marls, for example, have a typical color that changes from beige to gray and have a light shade. They are remains of ancient volcanoes ashes. On the Rock of Bismantova you can also observe singular outcrops representative of a group of rocks called today Bismantova Group.
A very interesting detail, not to be overlooked, is the presence of fossils in these places. This discovery made it even more valuable and interesting to visit this area. We could find Scolicia, a trace fossil which indicates the presence of an excavation created in the distant past by the sea urchin, creatures today remembered for their thorny shape.
Moreover, by analyzing the rock with advanced techniques and by observing with the aid of search tools which the microscope, it was discovered that small parts of it are constituted by fragments of shells of organisms such as echinoderms and the Bryozoa. The bryozoans, little known, are the species that live in colonies and which in some ways remind of corals. Although it may seem strange and singular you can also find shark teeth. But why only the teeth of these sea predators? Because they are the strongest part of the sharks and then can survive the passing of time. Even the sea lilies, with a calcareous skeleton, have left their traces in these places.