The Tremiti Islands (also known as Diomedean Islands, after the Greek hero Diomedes, Διομήδεες) are an archipelago in the Adriatic sea, roughly 12 nautical miles north of the Gargano cape and 30 nautical miles north of the Trabocchi coast and Vasto harbour.
The Islands form part of the Gargano National Park. As from 1989 a portion of this territory has become the Marine Natural Reserve of the Tremiti Islands.
Founded in 1922, this is the oldest and most important park in Italy. It sums up almost all of the traits that distinguish the central Apennines, including elements of its flora and fauna that are unique in the world or that are no longer found in the rest of the mountain range. It welcomes over a million visitors each year, drawn to it by the rare beauty of its natural habitats.
This large Park also includes the Morrone mountain range and the Hermitage of Saint Onuphrius, connected to the history of Pope Celestine V ("the coward... man who made the great refusal", in Dante's Inferno, Canto III, lines 60-61) ; it has been and remains to this very day one of the most important wildlife sanctuaries in Italy and Europe.
The Bomba Lake is an artificial basin created along the Sangro river by a beaten earth dam lying within the city limits of the town of Bomba; on road signs found in other towns' territories it is indicated as Santa Maria Lake, Pietraferrazzana Lake, Colledimezzo Lake and Pennadomo Lake.
A summer tourist resort and fishing site, its southern shore offers a great view of the Majella mountain range.