CUCC 2004 Olly M, Mark S + Stuart
Rift continues for ~15m with a critical-angle boulder slope. Choked at bottom with slight draft emerging from rocks.
Oversuit + helmet (and presumably a light as well - DL)
Notes in 2004#40 (missing)
Underground Centre Line
caves-1623/2004-14/2004-14.svx 3d file