In the heart of Cambodia, in the Southern area of Siem Reap is the Tonle Sap Lake, named after the Khmer បឹងទន្លេសាប, (Boeung Tonle Sap) meaning « great river of fresh water », more frequently translated as « great lake ». For Cambodians, it is a site of vital importance from an ecological, economic, social and cultural point of view.