Liguasan Marsh

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 across the provinces of Cotabato, Maguindanao del Norte, Maguindanao del Sur, and Sultan Kudarat. About 300 square kilometers of the marsh is designated as a game refuge and bird sanctuary.