Updated 27th September 2018

A big depression (14m deep and 20m wide) with a wall around the top. A hole is 2 to 2.5m wide and 5m long with 0.75m maximum height. It continues low for at least 4m A draught has been felt. (Ref: 01d)

References: anon., 2018b (Easter logbook)
Entrance pictures : April 2018
Underground picture :
Video : around the entrance
Detailed survey :
Line Survey :
On area survey :
Survex file :