Updated 8th May 2018
A large depression below the drinking trough on the track. The hole was originally descibed as a " boulder-filled rock shelter at the bottom which probably doesn't go but needs a torch to confirm. No echo but possible draught." This was checked out in April 2018 where a small chamber has a calcite wall.
Reference: anon., 2004b (Easter logbook); anon., 2018b (Easter logbook)
Entrance pictures: yes
On area survey: