BU-40
Cavity in brown limestone with a snow deposit, galleries and pits reaching -200 metres deep.
EspeleoWorld
BU-40
Cavity in brown limestone with a snow deposit, galleries and pits reaching -200 metres deep.
Isaba/Izaba
Sviluppo: 290 m · Profondità: 200 m
Scheda aggiornata
https://espeleoworld.com/it/c/bu-40-isaba-izaba
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Cavity in brown limestone with a snow deposit, galleries and pits reaching -200 metres deep.
Descrizione
Morfologia
Large-entrance cavity in the brown limestone that leads down to -40 metres onto a snow deposit. A smaller entrance also gives access to the snow deposit. A meander about 60 metres long leads down onto a large pit with a 100-metre vertical drop, whose bottom is choked with debris. The total depth is -200 metres.
Concrezioni
It has many concretions between -50 and -100 metres.
Progressione
From the snow deposit, the cavity continues through a narrow passage with a draught and small pools of 3, 4, 5 and 32, down to the -100 metre level. The draught escapes through a fissure at -140 metres depth.
Storia
1979: SECEM Group of Manresa.
1979: Pernette Budoguia.
2006: Larra G.Satorrak research.
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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