Name: Cubilla (also called Penilla in some OUCC documents)
Location: Near Castro Urdiales
GPS: N43°21'41" W3°16'37"
UTM: 30T 477.67 4801.20
Lambert: 6334 9732
Survey: OUCC 1967 » (known to be missing side passages near the entrance)
Description: Large cave (1000m) explored in 1966/67 by OUCC;
See OUCC Report 1967 » (called ‘Penilla’ in that report).
2000 – brief initial exploration
2001 – explore major inlet series on the right (with Spanish survey mark F7); this is missing from the survey and yet sources all the water in the cave – meaning that the main stream is completely unaccounted for
2003 – GPS
2007 – brief ‘warm-up’ trip
2018 – drone flights and short visit
Worth another visit.
Expeditions to the Picos de Europa and elsewhere since 1973.
Please e-mail Mike Cowlishaw (firstname.lastname@example.org) or Bill Collis (email@example.com)
if you have any corrections, suggestions, etc. See also the SpeleoTrove speleology section ».
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use only. All content © Speleogroup 1973, 2019,
This page was last edited on 2019-07-06 by mfc.