CHAILLU MASSIF

mountain range in south-central Gabon, rising to more than 3,300 feet (1,000 m) between the Ngouni and the Ogoou rivers; it forms the country's main watershed. The range contains Mount Milondo (3,346 feet ), the highest peak in Gabon, 53 miles (85 km) southwest of Koula-Moutou. Other high points in the range are Mount Iboundji (3,215 feet ) and Mount Mimongo (2,822 feet ). The granite massif is named for the explorer Paul du Chaillu, who is said to have discovered the mountains during his journeys up the Ngouni River (185565).