2523: Pig Nut Pot
Fresnedo 30T 452690 4801148 (Datum: ETRS89. Accuracy code: G) Altitude 215m
Length 102m Depth 8m
Area position

Updated 10th October 2007; 18th December 2008; 24th September 2018

Some time was spent excavating this site as it was thought it could be an alternative entrance into Cueva del Torno and an easier route to removing the human skull in that cave.
From the base of the sloping 6m entrance pitch (with a tightish top), passage heads in 2 directions. Uphill to the southwest leads to a mud choke and bear scratchings. Various bones were found in the deposits at this side of the pitch chamber in 2007.
In the opposite direction, the passage swings to the northwest with bones (1 femur was identified as bear and not human), a fine false floor and ends at a stal choke about 5m below the surface.
The cave has been filled with sediment and the nice phreatic shape can be seen in some of the photos.

The grid reference was confirmed in 2018 and the site was found with a substantial cover.

Reference: anon., 2006d (summer logbook); Corrin Juan, 2007; anon., 2007d (summer logbook); Corrin Juan, 2007a; Smith P, Corrin J & Cobo J R, 2008; anon., 2018c (summer logbook)
Entrance pictures : Summer 2006 : entrance pitch : covered up, 2018
Underground pictures : from summer 2006  : from summer 2007
Video : Bear bone and passage (18Mb)
Detailed Survey : pdf file
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.)

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