Ometepe is the name of two small connected islands in the middle of Lake Nicaragua, the largest lake in Central America. These islands were formed by the peaks of two volcanoes and connected by a short isthmus. This area is part of the Greater Nicoya subregion, one of the richest archaeological zones in Central America. Oval in shape, with an area of 3,149 square miles (8,157 square km), the lake is 110 miles (177 km) in length and has an average width of 36 miles (58 km). It is about 60 feet (18 metres) deep in the centre, and its waters reach a depth of 200 feet (60 metres) to the southeast of its largest island.