Avenc del Lledoner

Petit avenc de 7 m. de fondària a Castellar del Vallès

Castellar del Vallès • Vallès Occidental25m7m

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Avenc del Lledoner

Petit avenc de 7 m. de fondària a Castellar del Vallès

Castellar del Vallès · Vallès Occidental

Length: 25 m · Depth: 7 m

Updated record

https://espeleoworld.com/en/c/avenc-del-lledoner

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

Small pit 7 m deep in Castellar del Vallès, with a 13 m entrance divided into two parts and a hackberry tree that makes it easier to locate.

Characteristics

Type: Pothole
Municipality: Castellar del Vallès
Region: Vallès Occidental
Unit: Sant Llorenç del Munt
Length: 25 meters
Depth: 7 meters
Major Unit: Serralada Prelitoral
Lithology: Conglomerate
Last review: 2012-11-17

Location

To reach it, follow the track that climbs towards the Sot de la Carda along the S side of the Muronell hill, once you have crossed the fork where another track climbs up along the N side. We will walk about 600 metres until we find a crossroads on the left that descends to the torrent bed; however, it will be necessary to continue to the right for about 180 metres to the spot where we will observe a gully, which we will go up through the very dense forest (about 120 metres), crossing a rocky area and later a pine grove. The entrance is long and easy to see; inside a hackberry tree grows that makes it easier to locate.

Entrances

Always verify coordinates and access conditions before setting out.

Avenc del Lledoner
Elevation: 520 m
41.632720, 2.041770
UTM 31T (ED 50) 420281 4609647
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Topographic

Avenc del Lledoner - Topography, Castellar del Vallès, Vallès Occidental

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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

The entrance, 13 metres long, is divided into two parts by a bedrock outcrop located approximately in the middle. The pit is structured on a very steep E-W joint, where very marked erosion forms can be observed.

Hydrology

The pit collected the waters that drain from the Muronell hill, acting as a swallow hole but with less importance than in past times. A residual cavity filled with earth and organic matter from the exterior.

Progression

The upper part of the entrance is where the splendid hackberry tree grows that makes the descent into the cavity easier, via a very steep ramp full of leaf litter, which leads to the foot of the great fissure; it can be followed in a W direction to reach the lower entrance, where a fig tree grows. On this side the ramp is of hard and slippery rock but somewhat shorter than the previous one.

History

Known by the woodcutter of Sant Feliu del Racó, Mr. Josep Lleixa, he accompanied members of the SIS – CET and the GES – CMT (Terrassa), who explored the cavity for the first time on 15 September 1984.