Avenc dels Negres

A 34-metre-deep pit in the Campgràs area, Sitges, first explored in the spring of 1969.

Sitges • Garraf 40m 34m

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Avenc dels Negres

A 34-metre-deep pit in the Campgràs area, Sitges, first explored in the spring of 1969.

Sitges · Garraf

Length: 40 m · Depth: 34 m

Updated record

https://espeleoworld.com/en/c/avenc-dels-negres

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 34-metre-deep pit in the Campgràs area, Sitges, first explored in the spring of 1969.

Characteristics

Type: Pothole
Municipality: Sitges
Region: Garraf
Unit: Garraf, el
Length: 40 meters
Depth: 34 meters
Major Unit: Serralada Litoral
Lithology: Limestone
Updated on EspeleoÍndex: November 17, 2012

Location

It is located 95 metres in the S7W direction from the avenc Hanna Svacbroc and 141 metres in the E20N direction from the avenc de la Fragata, in the Campgràs area, Sitges.

Entrances

Always verify coordinates and access conditions before setting out.

Avenc dels Negres
Elevation: 497 m
41.286500, 1.915660
UTM 31T (ED 50) 409296 4571333
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Topographic

Avenc dels Negres - 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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Photos

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Description

Morphology

A 0.3x0.7 metre entrance that leads into an inclined conduit where, 1 metre further down, it becomes narrower, requiring a horizontal move in order to reach the head of a 25-metre-deep shaft. At the start of the shaft the circular section is 2 metres in diameter, reaching 3.5 metres at the base at -27 metres. This base, sloping towards the entrance of the next shaft, which has a section of 3x1 metres and is 7 metres deep, places us at the point of maximum depth at -34.5 metres.

History

The first exploration was carried out during the spring of 1969 by members of the Equip de Topografia Alpina de la Creu Roja de Sant Cugat and a small group of caving enthusiasts who at that time were at the Vallvidrera delegation of the Centre Excursionista Àliga.

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Bibliography

Borràs, J. (1973).-Catálogo Espeleológico del Macizo de Garraf (I):1-156.Barcelona.
Rovira, J; García,J.J. (1971).-”Nuevas simas descubiertas en el Pla de Campgràs”. Espeleosie (10):34-62. SIE-CE Àliga. Barcelona.