Bolumburu
Cavity located northwest of the village, on the slopes of Monte Dos Hermanas, with an entrance in a vertical joint and a descending development along a ramp through clastic materials.
EspeleoWorld
Bolumburu
Cavity located northwest of the village, on the slopes of Monte Dos Hermanas, with an entrance in a vertical joint and a descending development along a ramp through clastic materials.
Piedramillera
Sviluppo: 60 m · Profondità: 70 m
Scheda aggiornata
https://espeleoworld.com/it/c/bolumburu-piedramillera
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Cavity located northwest of the village, on the slopes of Monte Dos Hermanas, with an entrance in a vertical joint and a descending development along a ramp through clastic materials.
Descrizione
Morfologia
The entrance is a narrow vertical joint 15 metres long. The descent continues to 30 metres of ramp, with 25 metres of length and a vertical drop of 10 metres, in clastic materials.
Storia
21/12/1975 Institución Príncipe de Viana & Departamento de Obras Publicas
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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