Príncipe is the northernmost island of this two, and lies closest to the African mainland, with an area of 128 km2. São Tomé is the larger of the two islands, approximately 836 km2, and lies southwest of Príncipe. Annobón is the southernmost island and lies furthest from the African coast, with an area of 17 km2. The islands are mountainous, with the highest peaks reaching to 2,024 meters on São Tomé (Pico de São Tomé), 948 meters on Príncipe (Pico do Príncipe), and 598 meters on Annobón (Pico Quioveo).