The state of Pohnpei is located in the Pacific Ocean. It is located near the eastern end of the Caroline Islands and is about midway between Honolulu and Manila. Pohnpei's outer islands include Pingelap, Mokil, Ant, Pakin, Ngatik, Nukuoro, and Kapingamarangi. The land area of Pohnpei is given as 133.2 square miles (345 km2). With the exception of coastal plains, talus slopes and alluvial fans most of Pohnpei is ruggedly mountainous, lush and verdant, with the highest peak at 791 metres (2,595 ft). The rainforest is dense and rich; extensive mangrove swamps line much of the low shore. The island is roughly circular in outline, its 80-mile (130 km) circumference is surrounded by a coral reef.