Updated 7th January 2023

A hole in the side of the track in a cleared area. It wasn't seen in October 2022 as it needed thrashing to reach it.

References: anon., 2016b (Easter logbook); anon., 2022e (Christmas logbook)
Entrance pictures : April 2016
Underground picture :
Video :
Detailed survey :
Line Survey :
On area survey :
Survex file :