Avenc de l'Espina
Small pit 12 m deep in Horta de Sant Joan, located about 400 metres SW of the summit of l'Espina (1182 m), on the same ridge that links it with the summit of Muntanyola.
EspeleoWorld
Avenc de l'Espina
Small pit 12 m deep in Horta de Sant Joan, located about 400 metres SW of the summit of l'Espina (1182 m), on the same ridge that links it with the summit of Muntanyola.
Horta de Sant Joan · Terra Alta
Length: 16 m · Depth: 12 m
Updated record
https://espeleoworld.com/en/c/avenc-de-l-espina
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Small pit 12 m deep in Horta de Sant Joan, located about 400 metres SW of the summit of l'Espina (1182 m), on the same ridge that links it with the summit of Muntanyola.
Topographic
Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Image © its author.
Description
Morphology
A small shaft 7 metres deep, half blocked by boulders at its midpoint, communicates laterally at its bottom and through a narrow passage with another small shaft that reaches down to – 12 m.
Structured along two parallel joints oriented N – S.
Speleothems
Some lithogenic formations are found in the second small shaft.
History
Although it has been known for a very long time and is marked on some maps of the Port, we do not know who may have made the first exploration. We only have record of the exploration by the ERE – CEC in January 1981.
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Bibliography
Dades inèdites arxiu Toni Inglés
Nearby caves
Source: Espeleoindex (espeleoindex.com), modified. CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/