1752: Llaneces, Hoyo de (2012 (French: SCD))
Arredondo 30T 452249 4792291 (Datum: ETRS89. Accuracy code: G) Altitude 329m
Length 676m Depth 103m
Area position : Site entrance in context : Logbook search

Updated 11th February 2016; 24th September 2018; 15th November 2022

According to Simonnot G, 2016, the site position is ETRS89 0402240 4792288.

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 and continued in Simonnot G, 2016. The French reference number for this site is SCD2012.

On the fold of Llaneces, two hundred metres to the east of the path suitable for motor vehicles which reaches that point. Explored by the SSB in 1965 and the SCD in April 1982  when it was surveyed.
Two sections of short galleries are intersected with pitches  (p14; p7; p11; p5)  which drop down to -86m and a large, inactive gallery which goes from southwest to northeast for nearly three hundred meters.
At the southwest end (-98) crawls are usually occupied by very thick clay fillings.
In the 2010, the narrow section at -98m was excavated and passed into 145m of passage, explored and surveyed in 2014.

Simonnot G, 2022 adds a couple of paragraphs "to be developed":
   Two floors of short galleries interspersed with shafts (P.14; P.7; P.11; P.5) end at -86m in a large inactive gallery which extends from northeast to southwest for nearly three hundred meters. At the south-west end (-98m) the unobstructed narrowing is followed by a selective rolling mill of a few meters. Then we find more comfortable conduits most often occupied by very thick clay fillings. Two impassable diverticula absorb the current of sucking air (summer) which sweeps the cavity.

Reference: Degouve de Nuncques Patrick et Simonnot Guy, 1989; Loriol B de, 1959; Simonnot G, 1985. L'Hoyo de Llaneces. Sous le Plancher no 2 1985 pp48-50; anon., 2009b (Whit logbook); Simonnot G, 2016; Simonnot G, 2018; Simonnot G, 2022
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