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Forat de Sobirats

Forat de Sobirats

Gypsum cavity in Les Llosses, with two entrances: l'Engolidor and Forat de Sobirats, explored in 2025.

Llosses, Les • Ripollès 75m 12m

Gypsum cavity in Les Llosses, with two entrances: l'Engolidor and Forat de Sobirats, explored in 2025.

Caratteristiche

Località

On the BV-4656 road towards Sant Jaume de Frontanyà, at kilometre 3.890, a track leaves to the right towards the Sobirats farmhouse. We follow the track for one kilometre (it is better to leave the vehicle on the road, as the owner of the estate is somewhat wary). On reaching the coordinates (UTM-ETRS89 418095-4667591) we leave the track on the right, descending to the depression where we find an evident collapse/doline, and if it has rained, a stream that flows towards the lower sinkhole.

Mappa

Ingressi

Verifica sempre le coordinate e le condizioni di accesso prima di partire.

  1. Sobirats, Forat de

    Quota: 925 m

    42.156286, 2.007929
    UTM 31T (ETRS89) 418040 4667605
  2. Engolidor

    Quota: 926 m

    42.156261, 2.008087
    UTM 31T (ETRS89) 418053 4667602
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Foto

Forat de Sobirats - Foto, Llosses, Les, RipollèsVisualizza immagine
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Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Immagine © del suo autore.

Immagine 1 di 17

Descrizione

Morfologia

It is a sinkhole with two entrances, formed by water coming from a spring about 40 metres further up. The water seeps through the first of the holes (l'Engolidor), but there is no physical connection with the second hole located 16 metres away (Forat de Sobirats), since at present the passage between the two holes is obstructed.

Entering through the second entrance (Forat de Sobirats) one descends a small step that places us in a descending gallery that eventually becomes impenetrable. On the left side there is a parallel gallery with a low ceiling through which a water inflow circulates.

Halfway along the gallery, at the point where there is the connection with the parallel gallery, we find an upper level that by means of a crawl of about 8 metres in length leads us to a drop of -1.7m that places us in a wide gallery 9 metres in length. At the end of this, a passage between blocks gives access to a narrow conduit about 5 metres in length descending; the gallery widens and gains height and we find a chimney more than 5 metres high. The gallery continues a few metres more with diminishing dimensions until it ends collapsed by sediments.

Idrologia

The water comes from a spring about 40 metres further up and seeps through the first of the holes (l'Engolidor). If it has rained, a stream that flows towards the lower sinkhole.

Progressione

Entering through the second entrance (Forat de Sobirats) one descends a small step that places us in a descending gallery that eventually becomes impenetrable. Halfway along the gallery, at the point where there is the connection with the parallel gallery, we find an upper level that by means of a crawl of about 8 metres in length leads us to a drop of -1.7m that places us in a wide gallery 9 metres in length. At the end of this, a passage between blocks gives access to a narrow conduit about 5 metres in length descending.

Storia

Known since ancient times by farmers and shepherds, it is not until February of this year (2025) that it is explored by Nil Hosta Ferrer, who provides the location and accompanies Juli Serrano and Montse Roca (SIE-CEA) on a second exploration. In May of the same year they return accompanied by Francesc Rubinat (ERE-CEC); this time they bring a metal ladder to climb to the upper gallery, since the gypsum does not allow a rigging with minimum guarantees, and they take the opportunity to carry out the survey.

In July of the same year they return again to clear the final passage, advancing about fifteen metres more until it becomes impenetrable due to sediment accumulation.

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Bibliografia

Totes les dades, coordenades, situació, topografia i fotografies han estat facilitades per Nil Hosta Ferrer; Juli Serrano i Montse Roca (SIE-CEA) i Francesc Rubinat (ERE-CEC), actualització de juliol de 2025.

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