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Avenc Mario

A 28 m deep pit in the Fondo de Vallbona (Garraf), with a single narrow shaft and notable concretions.

Sitges • Garraf 30m 28m

A 28 m deep pit in the Fondo de Vallbona (Garraf), with a single narrow shaft and notable concretions.

Characteristics

Location

Theoretically, and following the known data, it should be located a few metres above the left slope of the torrent that descends from the head of the Fondo de Vallbona and runs parallel to the Pla de les Basses. More or less at the height of and below the Avenc dels Tres Tombs.

It must be said that we have been searching for it many times and in recent years, the exuberant vegetation that covers this whole sector makes the search practically impossible.

We know from veteran colleagues who claim to have been there many years ago and that course outings had even been made, but nobody is able to remember the exact spot.

The coordinates we provide are those corresponding to the point where Joan Borràs places it in his Catàleg espeleològic de Garraf.

If anyone can provide more precise data, we would be grateful for the information.

Map

Entrances

Always verify coordinates and access conditions before setting out.

  1. Mario, Avenc

    Elevation: 310 m

    41.282762, 1.926676
    UTM 31T (ED 50) 410212 4570907
Download all entrances as GPX

Description

Morphology

Constituted by a single narrow pit 28 metres deep. At 12 metres from the start of the descent it joins laterally on the W side with another vertical concavity, with a blind vault, gaining width in that direction.

Speleothems

The walls are covered by a notable display of concretions.

History

Discovered and explored by members of the SES – CE Puigmal around 1960, specifically it was located by en Mario Folch who, while stepping on a limestone slab made it move and beneath it the mouth of the pit appeared.

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Bibliography

  1. Borràs, J. (1974).- Catálogo espeleológico del macizo de Garraf. Vol. II. 166 pp. Barcelona.
  1. SES-CE Puigmal (1960).- Memoria X Curso Oficial de Exploraciones Subterráneas. SES Puigmal: 36 pàgines sense numerar. Barcelona.

Source: Espeleoindex (espeleoindex.com), modified. CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/