Gunung Trumat

Tang Biraji

The first cave visited in Gunung Trumat was Tang Biraji, although there is confusion over the correct name. Different villages nearby use different names so this was chosen as the correct name as it came from the oldest village. Permission was obtained from the village chief and after a short walk through the farms the entrance was found about six metres up a rubble slope at the base of the cliff.

The entrance passage descended steeply with a network of phreatic tubes to the right leading to another daylight entrance. Continuing down, photographing and surveying on the way we eventually came to an area of large phreatic chambers with tubes connecting passages and chambers in various places.

The passage to the right was followed to a cross rift where a small descnding passge headed NW before turning right. The passage to the left continued sloping downhill with the roof gradually rising to nine metres with the passage widening to nineteen metres. As we had spent far too much time taking photographs, we turned back and exited the cave just before dark.

Tang MYFH

Tang MYFH was entered through the left-hand entrance at the base of Gunung Trumat. A passage with a dark muddy floor led to an area of large phreatic maze with some well decorated chambers. The cave was home to many bats which, when in flight, gave the impression that a large river was flowing nearby. After exploring most of the cave we exited into a jungle covered doline.

On the opposite side of the doline we entered Tang Trumat, a short passage leading through the hill with the exit on the other side about 15m above the alluvial plain. A pitch was bolted to gain access to the lower level which exited at the base of the mountain..

Team: Dave Clucas & Rambli Ahmad