Libmanan Caves National Park is a protected area of the Philippines located in Barangay Sigamot in the municipality of Libmanan, Camarines Sur in Bicol Region. It is centered on the massive 2,856 meter-long Colapnitan Cave, the tenth longest cave in the Philippines. The park itself covers a total area of 19.4 hectares[2] across the hilly farmlands of Libmanan, known to host at least 18 more limestone caves of varying lengths, shapes and wonder. It was established in 1934 by virtue of Proclamation No. 654.