Updated 30th November 2016

An earth and boulders dig in a shakehole, abandoned when the draught was lost.
When re-examined in October 2016, there was a good draught but, after some excavation (along with 3903), the site is deemed a long-term project.

Reference: anon., 2013d (summer logbook); anon., 2016d (autumn logbook)
Entrance pictures : yes
Underground pictures :
Video :
Detailed survey :
Line Survey :
On area survey :
Survex file :