The Etruscan coast extends from Livorno to Piombino. Its coasts are Rocky up to Castiglioncello but as they near Cecina and Bibbona become low and Sandy for 45 km to Barter where begins the Hill system of Piombino. Is an area much sought after due to its clean sea, mild climate and its equipped accommodations. It is so named for the numerous etruscan tombs present mainly between the Gulf of Baratti and Populonia, which was originally the only Etruscan town along the coastal strip; the designation was extended later to the entire coast of the province of Livorno, largely corresponding to the Maremma livornese (ancient Maremma pisana). The coast is mostly low and Sandy in the stretch between Rosignano Solvay North and the Gulf of Baratti golden beaches to the South, generally, with the exception of the coastal stretch between Rosignano Solvay and Go where lie the picturesque white beaches. Further north, the pleasant promontories of Castiglioncello and Quercianella, mark the coast near Livorno, behind which lie the so called Colline livornesi. To the South, however, stands the promontory of Piombino, on top of which stands Populonia, which separates the Gulf of Baratti from the same Piombino, marking the border between the Ligurian Sea and the Tyrrhenian Sea.