 Monte Argentario is a promontory stretching towards the Tyrrhenian Sea in correspondence of the two southernmost islands of the Tuscan Archipelago, Giglio and Giannutri.The promontory was an island in the past, but the sea currents and the Albegna river joined it with the mainland through two so-called tomboli (stretches of land), the Tombolo of Giannella and the Tombolo of the Feniglia.The highest peak of Monte Argentario is the Punta Telegrafo at above sea level.