For someone, it is a slope, for some a story of the metamorphosis of a landscape for others a work of art of nature.
This wall, 20 × 8 meters, narrates an adventure of millions of years, protagonist Marmorito, the beginning about 260 million years ago, in the Triassic.
Then, on the earth's surface, a single continent emerges, the Pangea. Under its surface volcanic lavas press, cause fractures. 220 million years the pressure is such that the crust is torn and split into two plates (according to the theory of plate tectonics, the continents would be large plates in movement): Laurasia (North America, Eurasia) and Gondwana (South America, Africa, Australia, Antarctica); between them the water creeps, an ocean is born: the Tethys.
Italy and Piedmont lie on the bottom of this ocean.
In Jurassic, Africa separates from Gondwana, in North America from Cretaceous from Eurasia. In our area the Ligurian-Piedmontese ocean is formed.