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Esquerda Nº3 del Mas de les Fonts

Esquerda Nº3 del Mas de les Fonts

A 53-metre-deep pothole in Vallirana, the deepest and most complex of the group of crevices at the Mas de les Fonts.

Vallirana • Baix Llobregat 220m 53m

EspeleoWorld

Esquerda Nº3 del Mas de les Fonts

A 53-metre-deep pothole in Vallirana, the deepest and most complex of the group of crevices at the Mas de les Fonts.

Vallirana · Baix Llobregat

Length: 220 m · Depth: 53 m

Updated record

https://espeleoworld.com/en/c/esquerda-n-3-del-mas-de-les-fonts

Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.

Main entrance reference 41.355558, 1.933715 UTM 31 · 410806 4578777
Topographic map of the main entrance
Main entrance · ICGC topographic map

A 53-metre-deep pothole in Vallirana, the deepest and most complex of the group of crevices at the Mas de les Fonts.

Characteristics

Location

Take the track that leaves the Pla d'Ardenya towards the Serra del Mas and the Sotarro. On reaching the first crossroads, follow the left-hand one; when the climb is practically over and the track turns right towards the doline of the Serra del Mas, we must branch off to the left towards the crag. Before reaching it we will find a crevice that blocks our way; following it both to the right and to the left we will come across the different numbers that have been given to the Esquerda del Mas de les Fonts. This one is located towards the right; the three entrances are located after number 6 (SM-7) and before number 7 (SM-11).

Map

Entrances

Always verify coordinates and access conditions before setting out.

  1. Boca Sm-8

    Elevation: 518 m

    41.355558, 1.933715
    UTM 31T (ETRS89) 410806 4578777
    Open in map Open in Google Maps

  2. Boca Sm-9

    Elevation: 515 m

    41.355381, 1.933760
    UTM 31T (ETRS89) 410810 4578757
    Open in map Open in Google Maps

  3. Boca Sm-10

    Elevation: 510 m

    41.355124, 1.933728
    UTM 31T (ETRS89) 410807 4578728
    Open in map Open in Google Maps
Download all entrances as GPX

Photos

Esquerda Nº3 del Mas de les Fonts - Photo, Vallirana, Baix LlobregatView image
Click to enlarge

Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Image © its author.

Image 1 of 18

Description

Morphology

Of the whole group of crevices at the Mas de les Fonts it is the deepest and the most complex, since two of the entrances connect internally; the third entrance (SM-10) cannot be physically passed through.

Progression

The most comfortable access is through the middle entrance (SM-9), where we find a large chaos of blocks followed by a P12; a false sloping floor leads us to a P16. Through the other entrance, after a 6-metre drop, we find a -37-metre shaft; once at the base, if we continue upwards we will find a narrow shaft that will take us to the deepest point of the cavity.

History

At the end of the 70s the ERE of the CEC explore the various crevices in the area of les Esquerdes del Mas de les Fonts and also cite them as Penya Esquerdada with different numbers to identify them; in this case they cite it with the number 3, but they only access it through the entrance of what years later the SEO would mark as SM-9.

Members of the SEO-CE Vallirana explore and survey it on 27 January 1996, naming it with the abbreviations SM-8, SM-9 and SM-10 and also Penya Esquerdada 8/9/10.

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Bibliography

  1. Amenós, Toni.(1980).-“Esquerda del Mas de les Fonts”. Espeleòleg (30): 679-684.
  2. SEO del CE Vallirana. (2001).-“Les Esquerdes del Mas de les Fonts” Ardenya (1):1-7. Vallirana.
  3. Rubinat Aumedes, Francesc (2004).- “Catàleg Espeleològic del Massís de l'Ordal”. Espeleosie (Monogràfic):1-117. SIE del CE Àliga. Barcelona.
  4. Valles, Jordi de (2017).-”Baix Llobregat” Catàleg Espeleològic de Catalunya (Vol.6):1-468. EC Gràcia/FCE.
  • Situació, coordenades i fotografies facilitades per Montse Roca i Juli Serrano (SIE-CEA), març de 2021.

Nearby caves

Esquerda Nº6 del Mas de les Fonts

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Cova Sm-18 de la Serra del Mas

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