The island of Favignana (Aegusa), the largest, lies  southwest of Trapani; Levanzo (Phorbantia) lies  west; and Marettimo, the ancient Hiera Nesos,  west of Trapani, is now reckoned as a part of the group.
Favignana (Aegusa), the largest island, lies southwest of Trapani; Levanzo (Phorbantia) is located to the west; and Marettimo, the ancient Hiera Nesos, situated west of Trapani, is now considered part of the group.