The Luyang Cave is located in San Andres in Catanduanes Province. Inside Luyang Cave are corridors of majestic and huge stalactite and stalagmite pillars and rock formations. Hanging from the ceilings and walls of the cave are numerous bats that inhabit the entire cave. The Luyang Cave is the location where native Filipinos sought refuge against the Moro pirates during the 17th century. The villagers who took refuge inside Luyang Cave covered its entrance with dried tree branches and twigs to conceal the cave, and they used ground “sili” leaves and fruit to discourage the invaders from entering the cave. The pirates eventually found the cave and its entrance; When the invaders finally tried to enter the cave, the inhabitants burned the pile thinking that the smoke would prevent them from going inside. But the wind direction instead blew the smoke towards inside the cave which suffocated them to death. To appease the souls of the victims, an altar was built inside the cave and a mass is said every April 28. The cave is now officially called Luyang Cave Park, and is a mute witness and testimony of the tragic fate of inhabitants trapped and died inside. A memorial service is yearly celebrated in memory of those who perished.