Avenc del Fonoll

Small pit 7 m deep at the Fondo de Vallbona (Garraf), explored and surveyed in November 1973 by the GES – CM Barcelonès.

Sitges • Garraf 10m 7m

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Avenc del Fonoll

Small pit 7 m deep at the Fondo de Vallbona (Garraf), explored and surveyed in November 1973 by the GES – CM Barcelonès.

Sitges · Garraf

Length: 10 m · Depth: 7 m

Updated record

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

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 at the Fondo de Vallbona (Garraf), explored and surveyed in November 1973 by the GES – CM Barcelonès.

Characteristics

Type: Pothole
Municipality: Sitges
Region: Garraf
Unit: Garraf, el
Length: 10 meters
Depth: 7 meters
Major Unit: Serralada Litoral
Lithology: Dolomite
Updated on EspeleoÍndex: January 3, 2019

Location

Leaving the roundabout of the Rat Penat development we take the middle street, one of those heading N – NE to its end and then descend to the bed of the fondo de Vallbona.

We follow the fondo upstream for approximately 1.2 km. The fondo penetrates between two spurs, becoming quite narrow from then on.

From this point, the bed takes a general NNW orientation; we follow it for about 200 metres more and reach a point where it makes a sudden turn and takes an W orientation. At the same turning point we climb the ridge that descends from the puig del Martell and about 15 metres of elevation above the bed, almost on the same ridge, we find the entrance.

Entrances

Always verify coordinates and access conditions before setting out.

Avenc del Fonoll
Elevation: 155 m
41.276044, 1.926482
UTM 31T (ETRS89) 410092 4569957
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Topographic

Avenc del Fonoll - Topography, Sitges, Garraf

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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

Entrance 1.5x1 metre. A single shaft of cylindrical structure and a little more than 5 metres deep where a ledge is formed, conditioned by a large accumulation of clastic products, among which one can descend a little more than 1 metre, where progression ends.

Speleothems

Worth noting is a good presence of speleothems from the middle of the shaft onwards.

Progression

A single shaft of cylindrical structure and a little more than 5 metres deep where a ledge is formed, conditioned by a large accumulation of clastic products, among which one can descend a little more than 1 metre, where progression ends.