Sagada, Mountain Province authorities decided to close the well-known tourist spot Sumaguing, Lumiang and Crystal caves following the death of a 15-year-old boy.
According to authorities, the boy died while playing inside the cave.
Rescue teams from the Sagada PNP have brought the boy out and rushed to the hospital but was declared dead-on-arrival.
Sagada Tourism official said the victim entered the cave using the back entrance which is not used by tourists.
The caves will be closed to tourists while investigation is ongoing.