Updated 22nd May 2014

The previous grid reference was ETRS89: 30T 448738 4794811. The GPS'd one above was taken with a "weak signal". When positioned the question was asked, "Are these draughting holes 691?"

Draughting dig with 30cm diameter top. Tagged 691

References: anon., 1988 (logbook); Cawthorne B and Neill A, 1990; Cawthorne R, 1987; anon., 2014b (Easter logbook)
Entrance picture : yes
Underground picture(s):
Detailed Survey :
Line Survey :
On area survey :
Survex file :