1483: dig
La Secada 30T 451380 4797436 (Datum: ETRS89. Accuracy code: G) Altitude 197m
Length 2m
Area position

Updated 6th May 2001; 8th May 2018

An excavated draughting tube. The hole becomes too tight after one body length. This was checked out with an endiscope in April 2018 when it was decribed as tight for 2m then tighter beyond a block.

Reference: anon., 2000b (Easter logbook); anon., 2001a (Easter logbook); Corrin Juan, 2003a; anon., 2018b (Easter logbook)
Entrance picture: yes
Underground picture(s):
Detailed survey:
Line survey:
On area survey:
Survex file: