P-4
Vertical cavity of 24 metres next to the P3, with an entrance at the base of a crag, a main shaft, a chamber formed along an E-W joint and an upper chimney with white flowstone.
EspeleoWorld
P-4
Vertical cavity of 24 metres next to the P3, with an entrance at the base of a crag, a main shaft, a chamber formed along an E-W joint and an upper chimney with white flowstone.
Valle de Yerri/Deierri
Profondità: 36 m
Scheda aggiornata
https://espeleoworld.com/it/c/p-4-valle-de-yerri-deierri
Le informazioni possono cambiare. Verifica sempre coordinate, accesso, meteo e condizioni della cavità prima di partire.
Vertical cavity of 24 metres next to the P3, with an entrance at the base of a crag, a main shaft, a chamber formed along an E-W joint and an upper chimney with white flowstone.
Descrizione
Morfologia
An entrance of 1.5 metres leads to a 24-metre shaft by which a small chamber is reached that is formed along the E-W joint. It has an adjoining meander in a contiguous joint. Above the final shaft a small meander of steep gradient rises and ends in a chimney that connects with the chamber. From the base of the main shaft, by a small ascending ramp, the upper level of the cavity is reached between blocks.
Concrezioni
The walls present white flowstone that denotes great hydrological activity; it can be clearly seen, especially beneath the chimneys, that this activity is great, the upper level being covered by white flowstone.
Progressione
At the end of the shaft there is a steep ramp with a floor of humus and mud that continues to the small final shaft.
Storia
1988/2006 Research Urbasa G.E.E
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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