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UK-52

A 25-metre-deep pit whose entrance opens in a fracture of the limestone plateaus at the 2,300-metre contour, with a large snow deposit inside.

Isaba/Izaba 25m

A 25-metre-deep pit whose entrance opens in a fracture of the limestone plateaus at the 2,300-metre contour, with a large snow deposit inside.

Caratteristiche

Località

The entrance of the cavity opens on one of the many N-S-trending fractures that, descending from the collado de la Mesa de los Tres Reyes, opens onto the limestone plateaus at the 2,300-metre contour. The fissure defines the verticals of the cavity toward the Ukerdi valley, to the Norte, and Lescun to the E.

Mappa

Ingressi

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  1. Uk-52

    Quota: 2300 m

    42.921136, -0.728542
    UTM 30T (ED 50) 685490 4754770
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Descrizione

Morfologia

In its lowest part the fissure widens and reaches greater depth. Along the development of the cavity a change can be seen in the materials of the walls, currently undated, which pass from brown at the entrance to grey in the interior. The accumulation of blocks in its lower parts is considerable. The pit reaches 25 metres of depth.

Progressione

Inside the fissure a snow deposit of considerable dimensions develops that fills every passage. Along one of its sides the snow deposit lets us pass about four metres further, although at this point the passage closes by narrowing.

Storia

1987 G. 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