- Marking Comment
- Tagged as 2003-04 by initial explorers. Retagged with final kataster number 2004-07-31.
- In small elliptical depression around 100m N of stone bridge. A short tunnel to the south from this depression can be seen from the stone bridge; this is triangular in cross-section, hence the name.
- Tag Location
- p241 5282758.98, 411611.77, 1890.31m
CUCC 2003 Julian T, Dave L, Frank T
A short sloping crawl leads to a stooping passage which opens out into a large horizontal phreatic passage heading northeast, floored with large blocks. This proceeds for around 25m to the northeast before terminating in an unstable boulder pile. Some small tubes branch off but are too small to access. In summer 2003 there was a strong inwards draught, which lost itself in the terminal boulder chokes.
(Notes in 2003#23)
Form sent 2004.04.30. Number 241 allocated by Robert TWC at 2004 expo dinner
Underground Centre Line