Bohol Caves & Cave Pools: Hinagdanan, the Anda Pools, and the Karst Interior

Two people can come back from Bohol having each visited a cave and describe nothing in common. One walked down a concrete stair into a cool half-lit chamber and looked at a lagoon. The other jumped into a hole in a coconut field and swam out under a ladder. Same rock, same process. What separates them is where the water table sat while the chamber dissolved.

How the water table made two kinds of hole

Bohol is an uplifted limestone platform — an old reef complex pushed above sea level in stages, which is why the interior hills sit in tiers rather than at one height. Rain falling on that limestone picks up carbon dioxide and turns mildly acidic. It sinks into the joints in the rock and widens them until a joint becomes a passage and a passage becomes a chamber.

Where the dissolving happened below the water table — the level beneath which the rock is permanently saturated — every surface of the chamber stayed wet. These are phreatic caves, formed underwater, and their signature is a rounded profile with no dry floor, because there was never air in the room for a floor to form in. Where the land later rose or the water table dropped, the chamber drained. Water then trickled through the ceiling instead of filling the room, and stalactites, stalagmites and flowstone began to build. That is a dry cave.

The uplift was not even across the province, which is why Bohol has both. Near the coast, fresh rainwater sits as a lens on top of denser seawater soaked in through the porous rock, so a pool within a kilometre or two of the shore is often brackish rather than fresh, and its level moves with the tide. Bohol Island was inscribed as the Philippines’ first UNESCO Global Geopark in 2023, and caves are the category where that designation earns its keep.

Panglao and Dauis: the show cave

Hinagdanan Cave is the one nearly everyone sees. The chamber runs about 100 metres, the original opening is a hole roughly a metre across, and the way in now is a concrete stair — the name comes from the Cebuano hagdan, ladder, after the wooden one a farmer built to investigate a splash he heard. Collapsed sections of ceiling let daylight down onto a brackish lagoon 10 to 20 metres deep. Brackish, because Panglao is a small limestone island and the sea is never far under it.

Whether swimming is allowed there is unsettled: some sources describe an active swimming pool with changing rooms, others say bathing is no longer advised because of karst pollutants in the groundwater. Ask the caretaker on arrival.

Napaling Sardine Run with Hinagdanan Cave and countryside tour — book on Klook from ₱5,929

Anda and the eastern peninsula: the pool cluster

The far east of the province is where the phreatic chambers stayed full. The Anda cave pool circuit links more than twenty of them across a compact stretch of Anda’s interior, close enough that habal-habal drivers run between them as an informal loop. Cabagnow is the one most articles lead with — the largest and deepest, with a four to five metre jump and a ladder as the only exit, and closed to swimmers two days a week.

The better first stop is Combento Cave Pool in Barangay Virgen: a dome-ceilinged chamber a minute’s walk off the road, about six feet at its deepest, and that depth shifts with the coastal tide. Inland and uphill, Tibaw Cave Pool in Barangay Bacong is forest-enclosed and gentler, reached only as one station on a guided 4.5-kilometre loop run by barangay wardens.

The honest note about Anda is distance. It is two and a half to three hours each way from Tagbilaran, and the last stretch is habal-habal work between barangays. Treated as a day trip it is five or six hours in a vehicle for a few swims. Treated as a two-night base, it is the best part of the province for this.

Combento Cave and Cadapdapan Rice Terraces Full-Day Tour — book on Klook from ₱2,937

The interior and the north: rope, helmet, no handrail

Inland, the chambers drained and the visits get more serious. Kamira Cave at Danao runs 477 metres and is entered by a two-metre rope drop — ropes only, ladders banned as a conservation measure — with helmets required, wading between chambers, and a cap of about ten people per shift. On the north coast, Sohoton Cave in Inabanga is a multi-level system with bamboo ladders and large bat colonies whose evening emergence is the reason to go late; its exact barangay is not recorded in the provincial inventory, so confirm with the municipal tourism office before making the drive.

That patchiness is the category’s character. Alicia, Catigbian, Sierra Bullones and Guindulman all hold documented caves that amount, on paper, to a name, a barangay and a line in a provincial survey.

Going in

Almost none of these are lit. Bring a headlamp rather than a phone, because both hands will be busy on the rock. Closed shoes with grip, not sandals: limestone that stays permanently wet is polished, and the entry rocks are the slippery part. A dry bag, small notes for the fee, and water.

Arrange the guide where the community expects — the barangay hall or the ecotourism outpost, not a fixer in the car park. Ask two questions before travelling: what the water level is doing, and how you get back out. Between July and September flash flooding is a real risk inland, and the exit at a pool is often a fixed ladder or nothing.

Formations grow at the rate of a millimetre or two a decade, so a stalactite snapped for a photograph does not come back in anyone’s lifetime. Sunscreen and repellent wash straight off into a closed body of groundwater that villages downslope drink from. Rinse before you get in, or go in without.