P-52
Wide funnel-shaped entrance leading to a single very wide shaft, with a floor choked with humus and trunks and a ramp of about eight metres towards the east.
EspeleoWorld
P-52
Wide funnel-shaped entrance leading to a single very wide shaft, with a floor choked with humus and trunks and a ramp of about eight metres towards the east.
Valle de Yerri/Deierri
Sviluppo: 5 m · Profondità: 30 m
Scheda aggiornata
https://espeleoworld.com/it/c/p-52-valle-de-yerri-deierri
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Wide funnel-shaped entrance leading to a single very wide shaft, with a floor choked with humus and trunks and a ramp of about eight metres towards the east.
Descrizione
Morfologia
The entrance is of considerable dimensions and funnel-shaped; it gives way to a single very wide shaft whose dimensions increase as one descends. Its floor is totally choked with humus and trunks from the outside in large quantities. A ramp of about eight metres leads to its eastern part, protected from the direct fall of material from the outside.
Concrezioni
In the eastern part, all the walls are covered with flowstone and the ceiling with concretions, although in a state of decomposition.
Storia
1991 G. E. Estella.
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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