Forat de la Trona

A 23-metre-deep pit in the Montsec d'Ares (Àger), located and explored by the GRE de Balaguer on 30 March 1972 and rediscovered on 15 September 2024.

Àger • Noguera 56m 23m

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Forat de la Trona

A 23-metre-deep pit in the Montsec d'Ares (Àger), located and explored by the GRE de Balaguer on 30 March 1972 and rediscovered on 15 September 2024.

Àger · Noguera

Sviluppo: 56 m · Profondità: 23 m

Scheda aggiornata

https://espeleoworld.com/it/c/forat-de-la-trona

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Mappa topografica dell'ingresso principale — Ingresso principale · Mappa topografica ICGC

A 23-metre-deep pit in the Montsec d'Ares (Àger), located and explored by the GRE de Balaguer on 30 March 1972 and rediscovered on 15 September 2024.

Caratteristiche

Tipo: Abisso
Comune: Àger
Regione: Noguera
Unità: Montsec d'Ares
Sviluppo: 56 metri
Profondità: 23 metri
Unità principale: Prepirineu
Litologia: Calcare
Aggiornato su EspeleoÍndex: 29 settembre 2024

Località

It can be reached from the upper part of the Montsec d'Ares via the path used by climbers descending from the walls, through the Grau de l'Onso de Ponent, as far as the Plana d'en Lluís or de Sant Llorenç.

If we set out from the Plana d'en Lluís, we climb following this same path until, as we approach the base of the walls, there is a cairn and a small path heading off to the left (NW); this path quickly brings us up against the walls, and we follow it until we find ourselves at a small col between the wall and a needle. The cavity is located after the wall where the climbing routes Homo Montrebeianus, Crosta d'Ivory, etc. are found, and a little before the route Petit Diedre.

Ingressi

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Forat de la Trona
Quota: 1245 m
42.060189, 0.690818
UTM 31T (ETRS89) 308934 4659039
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Topografia

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Descrizione

Morfologia

The entrance gives access to a 5-metre pit; at its base, following the gallery in a NE direction, we reach a 4-metre pit between blocks, followed by a 4.5-metre pit; a short ledge places us at a new 3.5-metre pit, at the base of which a ramp leads us to the lowest point of the cavity at -23 metres. On one side of the final chamber a rather narrow fissure continues downwards; at present this is not accessible.

Storia

Cavity located and explored by the GRE de Balaguer on 30 March 1972. In 2006, members of the SIE-CEA, knowing of its existence, searched for it without success; they only located the nearby Escletxa de la Trona, also explored in 1972 by the GRE de Balaguer.

On 15 September 2024, Dani Brugarolas found the cavity while he was going to climb the route Homo Montrebeianus, which is right next to the entrance of the cavity; he passed the information on to Jordi Francès, Joan Carles Juderias and Josep Guarro, who went there the following Sunday, 22-09-2024, to carry out the exploration and take data for the cataloguing of the cavity, which has remained unpublished in all catalogues published up to the present day.