Tham Phu Pha Petch

The site is a large limestone cave with about 20,000 square meters size located above the down below area about 50 meters. An outside service area is consisted of car parking lot, souvenir and food shops, rest rooms, meeting room, tourist service center, walking tracks, ticket booth, and other landscapes under a tropical rainforest tree canopies.

The area is characterized by a rugged terrain of karst topography mostly consisting of Ordovician limestone. The cave contains diversified spectacular speleothems such as stalactites, stalagmites, columns, soda straws, sinter pools, sinter terraces, calcite crystals, cave pearls, flowstones, etc. Air ventilation in the cave can be taken place via a karst window. This karst window also lets a sunbeam radiating into the cave and lighting up a large stone surface to be a green carpet by such kinds of green microorganisms. There are some prehistoric archeological artifacts found in the cave. Ancient humans used to inhabit the cave as a shelter leaving with some potteries and sea mollusk shells.