Updated 6th November 2004; 11th February 2016; 24th September 2018
According to Simonnot G, 2016, the site position is ETRS89 0449639 4793088.
The information has been roughly translated from the French, Spéléo-Club de Dijon reference, Degouve de Nuncques Patrick et Simonnot Guy, 1989 (in Sous le Plancher, no 4, 1989), repeated in Simonnot G, 2016. The grid reference and altitude are likely to have been taken off a 1:25000 map. The French reference number for this site is SCD2015.
In the small valley which goes up from Colorado in Hoyo del Ramon. Explored October 1988. Choked pit. The site was possibly revisited in October 2004 and described as a climb down into a choked rift about 8m long.
Reference: Degouve de Nuncques Patrick et Simonnot Guy, 1989; anon., 2004e (autumn logbook); Simonnot G, 2016; Simonnot G, 2018
On area survey: