Tham Mae Usa

Useful Information

Location: Tham [cave] Mae Usa, is signposted off the Mae Sot to Mae Ramat highway.
Open: April 2003
Fee: 300 baht per party
Classification: SpeleologyKarst cave
Light: LightIncandescent Electric Light System
Dimension: L=1019 m, A=400 m asl, VR=88m
Guided tours: D=90 min.
Bibliography: John D Dunkley (1995): The Caves of Thailand, p 64
(2003): , Shepton Mallet Caving Club Jl Ser 11 (3) Spring 2003 pp 92, 94, survey and 6 colour photos.
Address: Tham Mae Usa, Ban Mae Kasa [area], Mae Sot, Tak [province], Thailand.
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.



There are over 850 steps to ascend to the entrance from where a steeply descending route, spiralling down between boulders, leads to a large chamber 50 m wide and 15 m high, with much guano and many bats. Below this chamber the cave follows a very large, straight passage along the strike towards the south. The passage is up to 30 m wide by 20 m high and in parts has a smooth earth floor for a straight 100 m. Despite being a show cave the going is quite difficult in places with very subdued lighting so boots and your own light are recommended. The tour ends at a lake but the cave continues for another 100 m to a mud choke.

Text by Tony Oldham (2004). With kind permission.