Euboea (Modern Greek, Εύβοια - Évia — Ancient Greek, Εύβοια - Eúboia) is the second largest of the Greek Aegean Islands and the second largest Greek island overall in area and population, after Crete. It is separated from the mainland of Greece by the Euboic Sea. In general outline it is a long and narrow, seahorse-shaped island; it is about 150 km (90 miles) long, and varies in breadth from 50 km (30 miles) to 6 km (4 miles). Its general direction is from northwest to southeast, and it is traversed throughout its length by a mountain range, which forms part of the chain that bounds Thessaly on the east, and is continued south of Euboea in the lofty islands of Andros, Tinos and Mykonos.