High Quality Content by WIKIPEDIA articles Pantelleria (Sicilian: Pantiddir a), the ancient Cossyra, is an Italian island in the Strait of Sicily in the Mediterranean Sea, 100 km (62.1 mi) southwest of Sicily and just 60 km (37.3 mi) east of the Tunisian coast. Administratively Pantelleria is a comune belonging to the Sicilian province of Trapani. With an area of 83 km2 (32 sq mi), it is the largest volcanic satellite island of Sicily.