Lake Lanao

Ancient lake, Rift lake in Lanao del Sur

Lake Lanao (Maranao: Ranao or Ranaw; Filipino: Lawa ng Ranao) is a large ancient lake in the province of Lanao del Sur, Philippines. With a surface area of 340 km² (130 mi²), it is the largest lake in Mindanao, the deepest and second largest lake in the Philippines, and counted as one of the 15 ancient lakes in the world. Scholars have been pushing for the lake's inclusion in the UNESCO World Heritage List.

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