Birougou National Park, situated in central Gabon, encompasses dense rainforests within the Chaillu Mountains and is named after Mount Birougou, one of the country's highest peaks at 975 meters. The park is a vital habitat for the sun-tailed guenon, a monkey species discovered in 1988 and found only in this region. Recognized for its ecological and cultural significance, the park was added to UNESCO's World Heritage Tentative List in 2005, and parts of it have been designated as a Ramsar wetland site since 2007, highlighting its importance in global conservation efforts.