Updated 15th May 2007; 21st June, 11th November 2021
An 8m deep hole that leads to another 8m drop to a T-junction where both routes are choked.
On the other side is a 4m undescended drop. A choked hole, 2m deep, can be found above the depression.
During Spring 2021, the Club de Montaña y Espeleología La Cambera explored around the Alisas-Los Trillos area, rediscovering some MCP sites and finding new ones. They documented this site in their blog and other notes as LC203, describing it as about 12m deep (undescended) and seeing an old bolt. The grid reference is 30T 0447668 4793758. This was later changed in the 2021 report to 30T 447668 4793758, putting it just south of the MCP permit boundary.
Reference: anon., 2007a (February logbook); anon., 2007b (Easter logbook); anon., 2021b (Spring logbook); anon., 2021d (autumn logbook); anon. 2021e (La Cambera Rpt)
Entrance pictures : yes
Underground pictures :
Detailed Survey :
Line Survey :
On area survey :
Survex file :