Tham Sra Yuon Thong - KR0020

(TH)
8.362245,98.745895
Length 721m Depth 65m
Grottocenter / carte

Location

This cave is reached by a 2 km concrete road to the west of the H4 just north of the road to Tham Khlang. The turning is signposted. The road ends at the resurgence pool. Martin Ellis - 15/10/2019

Description

Martin Ellis - 15/10/2019

Across the pond from the car park is a large resurgence entrance. Above the resurgence is a dry entrance into a 10m wide by 2m high passage where many columns have been draped with cloth. This dry cave links with the stream cave. The 20m wide stream passage is lit by daylight from the 10m wide entrance. The murky entrance pool has been dived to a depth of 11m and only old fishing nets were found. At the back of this stream passage it is possible to reach the main chamber via four routes. The easiest is to climb up the slope to the left. There is also a low level route on the left, a draughting crawl with a bat chamber and a high level rift route. The main chamber is up to 50m across and about 70m long. It is daylit from a third entrance and at the bottom of the chamber there are a couple of large pools. In December 2007 and January 2008 the second, smaller, pool was dived. The pool drops 10 m into what looks like upstream and downstream continuations and a line, marked 'CDAT', was already tied off 1 m below the surface. One way was followed on a bearing of 165¦ in a large passage and crystal-clear visibility for approximately 40 m to end at a wall at a depth of 17 m. Another route has been dived to an end where the way on became like a Swiss cheese. There was flow at this point. The passage at the top of the main chamber soon closes down. To the west of the entrance, below the boulders, there is a passage that links around to the third entrance. This third entrance is huge, about 90 m wide and 40 m wide. It is a seasonal stream sink which soon sumps. From here there is the high level rift route back to the stream passage.

Topographie

Martin Ellis - 15/10/2019

DUNKLEY, JOHN ROBERT (1995) - BCRA Grade 2a BROOKS, SIMON (2010) - OCC/SMCC November 2009 - Grade UISv2 6-3-BEF ELLIS (2013a) - Grade UISv2 6-3-BEF

Fauna

Martin Ellis - 15/10/2019

Orthomorpha lauta Golovatch, 1998 (Arthropoda, Diplopoda, Polydesmida, Paradoxosomatidae) (Likhitrakarn et al. 2011) Spinaxytes krabiensis Srisonchai, Enghoff et Panha, 2018 (Arthropoda, Diplopoda, Polydesmida, Paradoxosomatidae) (Srisonchai et al. 2018) Orthriophis taeniurus (Cope 1861) (Chordata, Reptilia, Squamata, Colubridae) (unpublished record)

Documents

[Topo] Tham Sra Yuon Thong 11/05/2019
Bibliography 15/10/2019

History

1988-05-04 The cave was first explored by the Australian expedition who made a sketch survey. early 2000s The cave was dived by Joon H. Park and his Cave Divers Association of Thailand. 2006-10-09 C. Sutcharit - collecting millipedes 2006-11-23 M. Ellis 2007-12-05 M. Ellis 2008-01 M. Gadd, B. Reymanents - diving 2009-11-18 M. Ellis, S. Brooks, S. Ghazy - survey 2017 Niwat Wattanayommanaporn found arcaheological remains in the cave Martin Ellis - 15/10/2019

Caves nearby

Distance (km)NameLength (m)Depth (m)
1.4Resurgence KR0188 - KR0188
2.1Cave KR0004 - KR0004
2.4Cave KR0231 - KR0231200
2.5Tham Khlang - KR006286746
2.7Tham Than Bok Khorani - KR000115015
3.0Kansai (Tham) [KR0238]037
3.4Tham Pong - KR0151
4.3Tham Ben - KR0160
4.5Tham Thalu Fa - KR0002200