Graller del Bogader
Avenc de 25 metres de desnivell al riu de Tosa (Queralbs)
EspeleoWorld
Graller del Bogader
Avenc de 25 metres de desnivell al riu de Tosa (Queralbs)
Queralbs · Ripollès
Length: 44 m · Depth: 25 m
Updated record
https://espeleoworld.com/en/c/graller-del-bogader
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
A pit with a 25-metre drop at the riu de Tosa (Queralbs), with a large 14X8-metre entrance in limestone and a 23.60-metre shaft.
Topographic
Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Image © its author.
Photos
Espeleoindex · CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/ · Image © its author.
Description
Morphology
We find a large 14X8-metre entrance excavated in limestone. From the head of the shaft a possible continuation is visible on the opposite wall. We descend a 23.60-metre shaft that places us on a 25º ramp, and which at its lower part leads to a large portico 7.50 metres high by 2.50 metres wide, which comes out at the torrent in the middle of the cliff. The drop from the lower lip is -25 metres.
History
The first reference to this cavity is that of the exploration carried out during 24 25 and 26 January 1953 by members of the GES de CMB, O. Andrés, J.M. Armengou and F. Barceló, who also explored several nearby cavities, citing this cavity as Avenc del Bogadé and assigning it a depth of -20 metres.
In 1980 the record of the cavity appears in volume 4 of the Catàleg Espeleològic de Catalunya but without a survey, where it is cited as Avenc del Bogader o Avenc del Graller.
On 11 January 1983 the SIE del CEA explored it and made the survey, although this would not be published until 1986 in a bulletin of the CE Àliga. They assigned it a drop of -37.5 metres, counted from the upper lip of the cavity.
In 2006 Ferran Cardona (ECG) and Josep Cuenca (GEB) located it again; from this location, the GE Badalona explored it on 27 January 2007 making a new survey of the cavity, citing it with the more correct name of Graller del Bogader.
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Bibliography
- Armengou, J.M. (1953).-”Sección de exploraciones”. Speleon (IV-2):108. Oviedo.
- Borràs, J.; Miñarro, J.M.; Talavera, F.(1980).-”el ripollès, la garrotxa i l'alt empordà”. Catàleg Espeleològic de Catalunya (vol.4):121. Ed. Políglota. Barcelona.
- Porcel i Caro, Enric.(2008).-”Dues cavitats a l'Estret del Forn”. Cavernes (27):70-73. GE Badalona.
- SIE (1986).-”Fitxes de cavitats: Avenc del Graller”. Butlletí CE Áliga (290):15-16. CE Àliga. Barcelona.
- Valles, J. de (2009).- Catàleg Espeleològic de Catalunya. Vol. 3: 381 pp. Espeleo Club de Gràcia / Federació Catalana d'Espeleologia. Barcelona.
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Source: Espeleoindex (espeleoindex.com), modified. CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/