3454: Llanío 2, Cueva-Cubio del
Riaño 30T 451698 4800898 (Datum: ETRS89. Accuracy code: G) Altitude 200m
Length 74m Depth 26m
Area position

Updated 1st December 2011; 25th May 2014

A "cold store" pointed out by the land owner. A fenced hole beside a tree has a walled opening with steps down. After about 27m an 11.3m pitch can be descended into a 20m long, 5m wide chamber. A further pitch drops 8m down through boulders to a highly unstable choke. The final chamber was re-examined in the autumn, 2011, but there is "no chance of digging". A tight rift part way down the pitch on the left hand side would require snappers to enlarge the first couple of metres.
The site was re-examined in April 2014, but the boulders at the base of the pitch were "not considered worthwhile". A hole in the mud slope was found to connect to known passage.

Reference: anon., 2010c (summer logbook); Corrin Juan, 2011; anon., 2011e (autumn logbook); anon., 2014b (Easter logbook)
Entrance picture: yes
Underground pictures : yes
Video :
Detailed Survey : yes
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.)