A narrow labyrinth.
Reference: anon., 2004e (autumn logbook)
Entrance pictures: yes
Underground picture(s): yes
Video:
Detailed Survey : 1:500 gif 1:500 pdf
Line survey:
On area survey:
Survex file: yes (Amended magnetic declination December 2013 to align with Eur79 grid and coordinates altered to fit ETRS89 datum, April 2014.)