Capisaan Cave System
Capisaan Cave System is a 4.2-kilometer network of interconnected limestone caves located in Barangay Capisaan, Kasibu, Nueva Vizcaya, Philippines. Recognized as the fifth longest cave system in the Philippines, it includes Lion Cave and Alayan Cave with stalactites, stalagmites, flowstones and subterranean streams. Managed by the local government with mandatory accredited guides, it is a major eco-tourism and spelunking destination in Cagayan Valley.