Graller del Portús

Avenc de 40 metres de fondària a la serra de Sant Gervàs (Pont de Suert).

Pont de Suert, El • Alta Ribagorça55m40m

EspeleoWorld

Graller del Portús

Avenc de 40 metres de fondària a la serra de Sant Gervàs (Pont de Suert).

Pont de Suert, El · Alta Ribagorça

Length: 55 m · Depth: 40 m

Updated record

https://espeleoworld.com/en/c/graller-del-portus

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 40-metre-deep pit in the serra de Sant Gervàs (Pont de Suert), with an 8x5-metre entrance in a doline, explored since 1966.

Characteristics

Type: Pothole
Municipality: Pont de Suert, El
Region: Alta Ribagorça
Unit: Serra de Sant Gervàs
Length: 55 meters
Depth: 40 meters
Major Unit: Prepirineu
Lithology: Limestone
Last review: 2021-03-02

Location

From the small village of Adons, we will follow the signposted path, first with signs and then with cairns, which heads to the Pas del Portús; this route is done calmly in 1.3 hours. Once at the cairn that indicates the entrance to the Pas del Portús X:320883, Y:4687283; Z:1694, we will continue along the ridge in a NW direction, where we will find several quite spectacular dolines. The graller del Portús is located 300 metres from the Pas.

Entrances

Always verify coordinates and access conditions before setting out.

Portús, Graller del
Elevation: 1688 m
42.316170, 0.821970
UTM 31T (ED 50) 320606 4687381
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Topographic

Graller del Portús - Topography, Pont de Suert, El, Alta Ribagorça

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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

Graller del Portús - Photo, Pont de Suert, El, Alta Ribagorça

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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 8x5-metre entrance opens at the bottom of a doline 18 metres in diameter and 6 deep. The shaft descends 25 metres to an inclined platform that meets a parallel spindle, which connects at various points with the initial shaft. From the ledge a 10-metre shaft places us on an inclined floor of 9x2 metres.

Progression

On the West side we find some parabolt anchors with plates to install the rope (data from 2010).

Other details

At certain times of the year, both on the platform at -28 metres and at the final base, a large quantity of snow accumulates. The inclined floor of 9x2 metres has a large quantity of jackdaw guano.

History

Known since ancient times by the local people, legend has it that during a fight between two rams, they pushed the woman who was looking after them and she fell into the graller. They say that the ring she was wearing appeared at the Font de Rivert.....(how many times will we have heard a similar story in other places).

The first exploration of which there is a record was carried out by the ERE of the CEC on 4 January 1966, after having had to pay a symbolic wage to a man from Abella d'Adons to accompany them to the entrance of the cavity.

In January 2021 members of the SAM de Tremp explore a side window located in the wall of the shaft, but this ends after a few metres.

Bio

Speonomus latebricola ssp. Elongatus
1 female specimen collected by O. Escolà on 4 January 1966.

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Bibliography

Escolà, O.(1967).-“Datos para el conocimiento de la Serra de Sant Gervàs”. Espeleòleg (2):60-66 ERE-CEC.Barcelona
Escolà. O.(1968) Montaña (115):100-108. ERE – Centre Excursionista de Catalunya. Barcelona.