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Barangay Cabayugan in Puerto Princesa City is endowed with numerous limestone karst formations, which include the popular Puerto Princesa Subterranean River National Park (PPSRNP) and the recently classified Lion’s Cave as eco-tourism destination in the said barangay.

Now, a newly-assessed cave, namely Daylight Hole, in the said area has been identified to be fit for eco-tourism.

Daylight Hole cave is located deep within the timberland area of Sitio Manturon and can be reached by a 45-minute meandering hike traversing second growth lowland dipterocarp forest mixed with forest over limestone from the Bgy. Cabayugan highway.

Daylight Hole Cave. (PHOTO/Jovic Fabello)
Daylight Hole Cave. (PHOTO/Jovic Fabello)

The cave got its name from its massive opening due to a “collapse” wherein daylight penetrates through its depths.

The base of the karst/limestone formation is also where the inflow of water (from Cabayugan river) to PPSRNP, also known as Puerto Princesa Underground River (PPUR).

“Daylight Hole is a large solution type of cave and a combination of wet and dry cave; walls are solid and contiguous, speleothems are huge occurring on the cave ceiling, walls and flooring,” said Jovic Fabello, cave specialist of the Palawan Council for Sustainable Development Staff (PCSDS).

Per request of the PPSRNP Management Office, Fabello, along with Palawan State University archaeologist, Dr. Jun G. Cayron, and La Karst Palawan Cavers Association, traveled to the said area from March 25-31, 2017 to conduct cave assessment, survey, and mapping of Daylight Hole Cave and determine its significance and appropriate use.

“Geological aspect of the cave was not studied alongside minerals and rock features present. Faults, fissures, and cracks were observed on the cave floor, walls and ceiling. Breakdown occurs mostly in within the twilight zone and daylight holes,” said Fabello.

The “Twilight zone” of the cave has a potential for eco-tourism purposes (Class III), while the other zones below are restricted for scientific research, mapping and photography only (Class I).