3817: Black Marble Hole
El Suto 30T 450254 4801057 (Datum: ETRS89. Accuracy code: G) Altitude 105m
Length 5m
Area position

Updated 10th October 2013; 12th May 2018

[Previous grid reference were 30T 450252 4801067 and 30T 450244 4801057]
A small entrance alongside the road. The hole is under a sandstone outcrop where the road gulley ends. The initial entrance void is 3 x 2 x 1m with a 45 degree slope which drops 5m to a very low crawl which needs digging. Just inside the entrance on the right hand side is an upward, draughting slot to a small passage which would require a lot of work. A separate visit found the site "not very promising".

Reference: anon., 2013b (Easter logbook); anon., 2013d (summer logbook); anon., 2018b (Easter logbook)
Entrance pictures : 2018
Underground pictures :
Video :
Detailed survey :
Line Survey :
On area survey :
Survex file :