A deep spring river in Hinatuan, Surigao del Sur, with mesmerizing blue waters of unknown depth and origin. Local legends say fairies paint the river blue at night, adding to its mystical allure. The daily fish feeding ritual at noon attracts schools of fish that mysteriously appear from the underwater cave system.
| Category | Nature |
| Province | Surigao del Sur |
| Region | Region XIII - Caraga |
| Coordinates | 8.13470000, 126.19310000 |