Excavating these caves will surely give you a thrill.
It is the second deepest cave in the Philippines at 115 meters. The cave has a walking size passage, shafts and drops of varying depths that provide for a lot of rope works.
Odessa Tumbali Cave in Peñablanca, Cagayan
It has superb formations and passage shapes, canals and lakes for swimming, photography and cave diving
Sumaging-Latipan in Lomyang Crystal Cave in Sagada, Mt.Province
fossil cave remarkable for its large passages and impressive gours
Odloman Cave in Mabinay, Negros Oriental
This cave is 8.9 km. long. Five entrances have been connected and the system comprises a mix of large and small galleries with some active streamway.
Palawan Underground River or St. Paul Subterranean River
The navigable part of the river inside the cave of the 4000-acre St. Paul Subterranean River stretches 15 kilometers in length (5 miles). St. Paul Cave is the 3rd deepest cave in the country.
clipped from: viewer.zoho.com 
