Updated 20th October 2004; 27th April 2012; 22nd January 2013
About 25m further along the track from site 1985. A 1m diameter phreatic tube which seems to enlarge beyond a constriction 2m in. When entered in December 2012, a blind enlargement was found to be just large enough to turn around in.
Reference: anon., 2004b (Easter logbook); anon., 2012b (Easter logbook); anon., 2012f (Christmas logbook)
Entrance pictures: yes
On area survey: