To the left of site 3981 and slightly higher up the bank. An unexplored, draughting, small triangular entrance that has been walled up. It looks to get bigger inside, but permission is needed to dig given its location within the field boundary.

Reference: anon., 2014b (Easter logbook)
Entrance pictures :
Underground pictures :
Video :
Detailed survey :
Line Survey :
On area survey :
Survex file :