Bawah Lake and Pulau Besar Lake founded at Zamrud petroleum exploration fields. It is has wonderful view that very astonishing. Entirely of the lake founded Fauna reservation that it wide is 2,500 hectares which kind of exotic flora and fauna. Life resources that founded in the lake like red pinang, arwana fish, and balido fish are protected. Kind of wild animals at Fauna Reservation at Pulau Besar and Bawah Lake are unique wealth for water recreation tour at Riau.