Tonlé Sap
Tonlé Sap (; Khmer: ទន្លេសាប, Tônlé Sab [tɔnleː saːp]; lit. 'Fresh River' or commonly translated as 'Great Lake') is a lake in the northwest of Cambodia. Belonging to the Mekong river system, Tonlé Sap is the largest freshwater lake in Southeast Asia and one of the most diverse and productive ecosystems in the world.