A small hole at the end of a 4m long depression, dropping down a metre and then, maybe, back under the depression. There is no draught. NB this is not 4757. [Site 13c; Phil Parker]
References: anon., 2019c (Whit logbook)
Entrance pictures :
Underground picture :
Video :
Detailed survey :
Line Survey :
On area survey :
Survex file :