Oiarbide XXVIII
A cavity on a narrow slope in the Aralar massif with two cleared entrance openings and a 140-metre vertical drop.
EspeleoWorld
Oiarbide XXVIII
A cavity on a narrow slope in the Aralar massif with two cleared entrance openings and a 140-metre vertical drop.
Sierra de Aralar
Sviluppo: 460 m · Profondità: 240 m
Scheda aggiornata
https://espeleoworld.com/it/c/oiarbide-xxviii-sierra-de-aralar
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A cavity on a narrow slope in the Aralar massif with two cleared entrance openings and a 140-metre vertical drop.
Descrizione
Morfologia
The two entrance openings are located ten metres from each other. The initial entrance leads to an active gallery with very slow progress owing to its small size. The second entrance, discovered from inside, leads to another gallery somewhat larger than the original. The cavity, on a narrow slope, leads to a 140-metre vertical drop, the largest absolute vertical drop in Aralar, with a total of -240 metres.
Progressione
Both openings were the object of clearing. The initial entrance was cleared in a few hours. The second entrance was discovered from inside and, because its dimensions are somewhat larger than the original, it allows substantially faster progress, which is why it has been the most used.
Storia
1999 G.E.S
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Fonte: Gobierno de Navarra – Catálogo espeleológico de Navarra (datosabiertos.navarra.es), modificato. CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ Gobierno de Navarra · dati aggiornati a 2022