Tham Khao Thalu

Tham Khao Thalu is a natural limestone cave on the isolated Khao Chakan hill in Khao Chakan District, Sa Kaeo Province, eastern Thailand. Part of a complex of more than 70 caves on the 90-meter-high karst outcrop, it is known for its through-passage that allows light to pass, stalactite and stalagmite formations, bat colonies, and small Buddhist shrines. The hill is a prominent local landmark surrounded by paddy fields and managed as a protected natural and religious site.

Visitors can expect a limestone cave on the Khao Chakan karst hill accessed by stairs and trails from the temple grounds at the base. Inside, the cave features a tunnel-like passage open at both ends, stalactites and stalagmites, dim natural lighting, bat roosts, and small Buddha images and shrines. The surrounding area offers views of rice fields, forested slopes, and other nearby caves. Exploration is on foot over uneven, rocky and sometimes slippery surfaces.

Khao Chakan is an isolated Permian limestone karst hill that has long been a local landmark and religious site. The caves have been used for Buddhist practice with shrines and images installed, and the hill and caves are protected for their geological and archaeological value.

The cave is part of the Wat Tham Khao Chakan temple complex and holds local Buddhist significance with Buddha images and shrines inside. It is visited for merit-making and is respected as a sacred natural site by the local community.