Updated 11th February 2016; 23rd September 2018
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 SCD2003.
Close to the last houses to the northeast of Arredondo, it is the source of a small tributary to the Rio Bustablado first exploration in August 1988. A small tube with a tiny stream soon splits into two: a watery conduit seems to sump and an inactive branch is impenetrable after a few meters.
Reference: Degouve de Nuncques Patrick et Simonnot Guy, 1989; Simonnot G, 2016; Simonnot G, 2018
On area survey: