Avenc de les Pedreres

A 10-metre-deep pit in Gualba, located by Joan Sabaté in October 1972 and explored by SIRE-UEC Gràcia in 1973.

Gualba • Vallès Oriental 41m 10m

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A 10-metre-deep pit in Gualba, located by Joan Sabaté in October 1972 and explored by SIRE-UEC Gràcia in 1973.

Gualba · Vallès Oriental

Length: 41 m · Depth: 10 m

Updated record

https://espeleoworld.com/en/c/avenc-de-les-pedreres

Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.

Topographic map of the main entrance — Main entrance · ICGC topographic map

A 10-metre-deep pit in Gualba, located by Joan Sabaté in October 1972 and explored by SIRE-UEC Gràcia in 1973.

Characteristics

Type: Pothole
Municipality: Gualba
Region: Vallès Oriental
Unit: Montseny, el
Length: 41 meters
Depth: 10 meters
Major Unit: Serralada Prelitoral
Lithology: Marble
Updated on EspeleoÍndex: June 16, 2018

Location

On the BV-5115 road towards Gualba, shortly before kilometre 5, we find a roundabout which we leave by the left (2nd exit); we follow the road, which soon ceases to be asphalted, until we find the junction with the road to Campins; we continue straight on along the track (from this point vehicle traffic is prohibited); following the main track we reach a quarry; the track makes a sharp bend and continues climbing in the direction of the Americano quarries; shortly before reaching them we find a junction; the cavity is on the left of the track shortly before reaching the junction.

Entrances

Always verify coordinates and access conditions before setting out.

Avenc de les Pedreres
Elevation: 481 m
41.742634, 2.486499
UTM 31T (ETRS89) 457302 4621329
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Topographic

Avenc de les Pedreres - Topography, Gualba, Vallès Oriental

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Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Image © its author.

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Photos

Avenc de les Pedreres - Photo, Gualba, Vallès Oriental

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Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Image © its author.

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Description

Morphology

A pit 10 metres deep. From the opening, through a narrow descending corridor between bedding planes, one reaches the base of a bell-shaped shaft formed by the erosive action of water in free-flowing conduction along a main joint running N-S. At the bottom of this entrance section, a series of small lateral chambers with a very low ceiling have developed.

Other details

Prior permission is required to visit these installations. We believe that new authorisations will be difficult to obtain for safety reasons which the company documents conclusively. Therefore, this note does not constitute a recommendation to visit; on the contrary, it is a statement of the practical difficulty of exploring the documented underground cavities, and of the need to agree any intervention beforehand with AYMAR.

History

Located by Joan Sabaté in October 1972. Explored by him and other colleagues from SIRE-UEC Gràcia on 4 and 17 February 1973. They returned on 11 March of the same year to carry out the survey. It seems that in the lower galleries the explorers had problems with hypoxia.

Bio

Pseudoscorpions

Roncus (Parablothrus) caballeroi Lagar 1974

Isopods

Spelaeonethes occidentalis Vandel

Coleoptera

Speonomus (Parvospeonomus) canyellesi Lagar 1974

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Bibliography

Borràs, J.; Miñarro, J.M.;Talavera, F.;(1982).-”el baix empordà, el gironès, la selva, l'osona, el vallès oriental i el maresme”. Catàleg Espeleològic de Catalunya (vol.6):267-269. Edit. Políglota. Barcelona.
Lagar, A.; Cañellas, J.; Torrella, J.(1974).-”El avenc de les Pedreres”. Senderos (184):26-29. UEC. Barcelona