5243: Sombra, Hoyo de la (a & b) (2802 (French: SCD))
Piluca 30T 451477 4793372 (Datum: ETRS89. Accuracy code: G) Altitude 578m
Length 2m Depth 2m
Area position : Logbook search
The information for this site has been shared by Guy Simonnot (Simonnot G, 2022) and roughly translated from the French using Google Translate as a starting point. The original grid reference used ED50 datum which has been converted to the ETRS89 datum above, with the altitude taken off the MCP QGIS map.
On the southwest slope of Piluca, in a wooded depression, to the right of the track that climbs from Tocornal towards Alto del Somo.
At the bottom of the hoyo, a first hole (-2) extends into the bedrock via an impenetrable crack of about 1.5 m that appears to be blocked. No noticeable drafts. Ten meters further north, a second low point is marked by a long crack (5 x 0.8 m) for 1.5 m deep. At one end, a 2 m gallery quickly ends in a very small funnel filled with earth and various bones. No draught.
Reference: Simonnot G, 2022
Entrance picture :
Underground pictures :
Detailed survey :
Line Survey :
On area survey :
Survex file :