Updated 18th April, 30th November 2016; 24th May 2017; 12th January 2018; 7th January 2023

Before Easter 2017, this was about 50m in plan and 30m in height away from the southeast corner of Cueva-Cubío del Llanío. However, April 2017 extensions has brought the possibility of connection much closer, with the two caves being only a few metres apart and at the same altitude.

A low entrance into low, excavated passage that currently ends at a low dig that was excavated in November 2015, Easter 2016, July 2016 (when no forward progress was made) and November 2016, when the team worked on lowering the floor in the tight section of the entrance passage and at the furthest point forward. The site was also cleared of debris. More digging occurred in April 2017 and excavators "can still see onwards".

In October 2022, the entrance couldn't be reached because of vegetation. But the nearby site 5227 was discovered.

Reference: anon., 2015c (summer logbook); anon., 2016b (Easter logbook) (November 2015 logbook account pasted here); anon., 2016b (Easter logbook); anon., 2016d (autumn logbook); anon., 2017b (Easter logbook); anon., 2022e (Christmas logbook)
Entrance pictures : summer 2015
Underground pictures: yes
Video:
Detailed Survey :
Line Survey :
On area survey :
Survex file :