Updated 25th September 2018; 26th June, 18th November 2022; 3rd May, 6th June 2024

The information below has been roughly translated from the French, Spéléo-Club Dijon reference, Simonnot G, 2018. The length is taken from the reconstructed Survex file.

In the valley bottom of Vallina (wooded area), just north of a meadow and a house in ruins.
At the bottom of the entrance projection (-3) a window exhales a strong stream of air snoring in summer; opened through the blocks of a very unstable chute, it gives on a first enlargement. A new slope, unobstructed at its summit, leads to a short section of gallery and at the top of the Nonosse pitch.
A beautiful gallery of 3 to 5 m high, facing north, unfortunately ends quickly on clogging fills and concretions. A temporary circulation has cut through the thick layer of sediment and is lost in impenetrable cracks (no draft).
It is at height that the disobstructions of the passage Rahan allowed to advance a little in a set of ducts staged over a dozen meters. The current of air comes from an impenetrable ascending diaclase without major work (-3).
The torca seems, because of its proximity, in relation with the very big Cueva Vallina. It is impossible, however, to say whether the current of air comes from the known parts of this cavity (north-west) or from a still unknown sector (north-east, east).
The site was surveyed in 2011.

It was reported that an extra 20m had been added by the SCD team. This has increased the approximate length to about 200m.

It was partly explored by a Catalan team in 2023 and called "Torca Pusi". A nearby hole was found choked and not draughting.

References: anon., 2016a (January, February logbook); Simonnot G, 2016; Simonnot G, 2018; Simonnot G, 2022; Grupo de Exploración Vallina, 2023; anon., 2024b (Easter logbook); anon., 2024c (Whit logbook)
Entrance pictures : from Vallina publication 2023 : 2023
Underground pictures :
Video :
Detailed survey : 2011
Line Survey :
On area survey :
Survex file : Reconstructed from the 2011 survey