Genovesa Island is a shield volcano in the Galápagos Islands in the
eastern Pacific Ocean. The island occupies about 14 square kilometres
(5 sq mi), and its maximum elevation is 64 m (210 ft). The
horse-shoe shaped island has a volcanic caldera whose wall has collapsed,
forming the Great Darwin Bay, surrounded by cliffs. Lake Arcturus, filled with
salt water, lies in the centre, and sediment within this crater lake is less
than 6,000 years old. Although no historical eruptions are known from
Genovesa, there are very young lava flows on the flanks of the volcano
