Liguasan Marsh
Philippines
Liguasan Marsh, also known as Ligawasan Marsh, is the largest swamp and marsh area in south-central Mindanao, Philippines. It spans approximately 2,200 square kilometers (850 sq mi) across the provinces of Cotabato, Maguindanao del Norte, Maguindanao del Sur, and Sultan Kudarat. About 300 square kilometers (120 sq mi) of the marsh is designated as a game refuge and bird sanctuary. The marsh is part of a complex river system featuring freshwater lakes, ponds, and marshes in the Mindanao River Basin. It actually consists of two adjoining basins: Liguasan Marsh and Libungan Marsh, each with distinct water regimes. Approximately 5,000 hectares of old-growth forest remain within the marsh.
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