Italy / Pontine Islands / Ponza / 2015 / The entrance of the Ponza Pier. The Pontine Islands, known as the Ponziane, comprise two groups: Ponza, Palmarola, Zannone and Gavi to the northwest and Ventotene and Santo Stefano to the southwest. The archipelago is the result of a volcano actitvity and lie just in front of Terracina and the Gaeta harbour. © Emanuela de Santis / Anzenberger