By: Boy Sabuy
Pong Yub , Ratchaburi province(ราชบุรี). A lot of big holes here. As the ground collapsed. It happened a long time ago. I think it is a Natural wonders.
It is located in private land. And is currently becoming a tourist attraction. About 130 kilometers away from Bangkok.
open daily from 06:00 to 18:00
Admission fee is 40 Baht (1.3 USD)