Avenc del Torrent Negre
A 31-metre-deep pit at the Rialb river (Coll de Nargó), with an entrance 2 metres high and 1.5 wide, explored since 2004 and the object of new explorations in 2021 and 2022.
EspeleoWorld
Avenc del Torrent Negre
A 31-metre-deep pit at the Rialb river (Coll de Nargó), with an entrance 2 metres high and 1.5 wide, explored since 2004 and the object of new explorations in 2021 and 2022.
Coll de Nargó · Alt Urgell
Sviluppo: 50 m · Profondità: 31 m
Scheda aggiornata
https://espeleoworld.com/it/c/avenc-del-torrent-negre
Le informazioni possono cambiare. Verifica sempre coordinate, accesso, meteo e condizioni della cavità prima di partire.
A 31-metre-deep pit at the Rialb river (Coll de Nargó), with an entrance 2 metres high and 1.5 wide, explored since 2004 and the object of new explorations in 2021 and 2022.
Topografia
Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Immagine © del suo autore.
Foto
Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Immagine © del suo autore.
Descrizione
Morfologia
The entrance, about 2 metres high and 1.5 wide, begins with a gallery 4 metres long that leads us to a pou rodó almost 30 metres deep. About 4 metres above the base of the shaft, we find a passage that starts on a slope and continues flat for a few more metres, reaching at this point the -31 metres of depth.
During the 2022 explorations it has been established that at the end of the head of the entrance shaft one reaches a shaft that is no more than the upper part of the entrance one separated by a rock bridge in the first metres. In the main shaft, 11 metres from the base and on the other side of the side of the shaft by which one descends, there is a window that gives access to a narrow gallery that leads to a shaft so narrow that it becomes impracticable.
Storia
The first reference we have of this cavity is provided by the GE LLeida, who made the first exploration in 2004. On 19-12-2021, Josep Guarro, Joan C. Juderias and Ainhoa Bernal visited the cavity with the intention of checking an unknown point at the other end of the head of the shaft that was noted on the survey by the colleagues from Lleida, beginning by installing a handline. In early 2022 they returned a few more times with Iván and Joaquín Contreras, Carles Pons and Dani Ferrer, resolving the unknown points and exploring some passages of little importance or very narrow. In November 2022 members of the Espeleodijous visited the cavity, carried out a new survey and removed the equipment.
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Bibliografia
- Satorra, Antonio; Pérez, Lluís.(2006).- “Riu Rialb (Alt Urgell)”. Grallera (6):85-89. GELL – CE Lleida.
- Revisió de dades, coordenades i fotografies extretes del web: (espeleodijous.cat) Apunt del 10-11-2022
- Topografia extreta del blog Natura Endis (naturaendins.blogspot.com) post del dia 10-11-2022.
Grotte vicine
Cova dels Emboscats del Torrent Negre
0.0 km · O
Coll de Nargó (Alt Urgell)
1 topo.5 foto
Canya de l'óssa
0.5 km · N
Coll de Nargó (Alt Urgell)
1 topo.
Avenc del Botador
4.3 km · SE
Coll de Nargó (Alt Urgell)
1 topo.
Avenc del Castell de Tarabau
4.6 km · S
Baronia de Rialb, La (Noguera)
1 topo.
Fonte: Espeleoindex (espeleoindex.com), modificato. CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/