The area Portuense
Like other models, we have redesigned the shape of the area of the city where we live: the Portuense. We could well see two levels of soil: a lower and an upper sandy tuff. All with a very irregular and branched. We understand, looking at the tables of Parotto (professor at the University of Rome), that this is due to lava flows (tuff) Sabatini volcanoes and volcano Lazio, who have formed on the sand of the Tiber and the sea a carpet of tuff, also called "Cappellaccio", that the stormwater have easily crumbled, forming many small streams, in Rome, are commonly called "Marrane". Over time these have eroded the tuff up to the sandy layers. With our now familiar with the technical work we obtained a polystyrene plastic espsoto training in the area of Lazio.