Biyak na Bato is a national park. It was declared so by President Manuel L. Quezon in 1937. History has it that Filipino revolutionaries like Emilio Aguinaldo used the numerous caves of Biak na Bato as refuge when they fought against the spaniards.
The caves of Biak na Bato are no ordinary caves. The caves are beautifully lined with gigantic stalactites and awesome rock formations. Some are even teeming with wildlife. And, there are so many caves to explore! Aside from the dozen or so famous caves, the guides estimate that there are nearly a hundred caves in Biak na Bato.