One of the most ecologically significant wetlands in the Philippines and a Ramsar Wetland of International Importance, covering over 14,000 hectares of marshland. The marsh is home to saltwater crocodiles, the Philippine eagle, and over 200 bird species, making it a premier birdwatching destination. Boat trips through the floating villages of the Manobo indigenous people offer a unique cultural immersion.
| Category | Nature |
| Province | Agusan del Sur |
| Region | Region XIII - Caraga |
| Coordinates | 8.28330000, 125.88330000 |