Suhoton Underground River

Suhoton Underground River is a natural cave and river system located in Barangay Sico, Bislig City, Surigao del Sur, Mindanao, Philippines. The site features a navigable underground river flowing through a limestone cave adorned with stalactites and stalagmites. Accessible by motorcycle, trek and paddle boat, it is managed as an ecotourism attraction within Bislig's protected landscape, notable for its cave formations, clear waters and guided boat tours.

Visitors can expect a guided paddle-boat ride through a limestone cave with an underground river, viewing stalactites, stalagmites and rock formations in a dimly lit cavern. The approach involves a habal-habal ride from Bislig City, a short trek and a boat transfer to the cave mouth. Inside, the river is calm and shallow in parts, surrounded by forested karst landscape outside the cave.