3129: Symmetry Pot
Cubija 30T 449676 4796706 (Datum: ETRS89. Accuracy code: G) Altitude 425m
Length 18m Depth 12m
Area position

A depression perched high above the middle of the underground survey loop of Simas del Picón and Torca del Regaton. The boulder-filled entrance shakehole emits a strong, warm draught in the winter. When excavated, the hole revealed a 10m deep drop to a slope into choked rifts. One tiny rift appeared to carry the draught.
The hole has been re-filled with the spoil.

Reference: anon., 2008g (Christmas logbook); anon., 2012e (autumn logbook)
Entrance pictures: yes
Underground pictures :  yes
Video : warm draught
Detailed Survey : sketch
Line Survey :
On area survey :
Survex file :