The island is separated by a 16 km stretch of sea from the Argentario promontory: mainly mountainous, it is almost all granite with the highest point the Poggio della Pagana (496 m). 90% of its surface is covered by Mediterranean vegetation alternating with large pine forests and numerous vineyards which enable the production of the famous "Ansonaco" wine. The coast is 27 km long, made up of rocks, of smooth cliffs and several bays: Arenella, Cannelle, Caldane and Campese, the biggest one with its little village of the same name.