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SM2

Temporary spring in a karst at Burgui, with an initial crawlway, a small chamber 1.5 metres high and an impenetrable joint.

Garde 7m 0.7m

Temporary spring in a karst at Burgui, with an initial crawlway, a small chamber 1.5 metres high and an impenetrable joint.

Caratteristiche

Località

Along the road from Burgui to Roncal and after passing "las Goteras", a track is taken on the right which, after passing a wooden fence and crossing a ravine, becomes an ascending track with a steep gradient towards the fuente de la Tosca. After about 100 metres a turn-off to the left is taken to continue climbing the track on a steep gradient. After walking one kilometre the beginning of a karst surrounded by forest comes into view. Where the track ends, an ascending path is taken towards the upper part of the karst that can be seen.

Mappa

Ingressi

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  1. Sm2

    Quota: 952 m

    42.781453, -0.943253
    UTM 30T (ED 50) 668345 4738807
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Descrizione

Morfologia

The karst is cut by a joint that crosses it from North to South. Mouth no. 1 of the SM1 opens in the limestone wall on the left. The temporary spring opens in a crawlway for the first two metres and presents a small chamber 1.5 metres high, where the impenetrable joint is observed.

Idrologia

The impenetrable joint is possibly where the water comes from. Some rounded clasts on the floor reveal the passage of water.

Progressione

The path is lost and one has to enter the karst. One descends the joint for about 20 metres, down-climbs a 4-metre step and mouth no. 1 of the SM1 opens in the limestone wall on the left. This mouth is passed and the joint is continued downwards. A drop is found which is skirted and descended on the left. A 1-metre step is passed and the mouth of the spring is on the left.

Storia

1994 Research Roncal G.Otxola

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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