Nice. where is it in Chumphonburi? 
Directions From Buriram ~~~~ 214 out past the airport onto Satuk,

straight on over the bridge in Satuk, after a couple of Kms

the dual carriageway finishes take the first turning on the right (about 2km further on). Follow this road through a couple of villages and after about 5 kms you come to a very large bridge, 1st right after the bridge (500 metres) you are there! There are signs but they are in Thai. The place is not visible from the road and not obvious!
TBWG