Tresviso Caves Project

This website draws together all the available information in regards caving expeditions that have been undertaken to the Eastern Massif (Andara) region of the Picos de Europa, Northern Spain.

The pages include the original exploration notes by Lancaster University Speleological Society (LUSS) from the early 1970’s to the mid-1990’s, the continuing exploration by various Spanish clubs (A.D. KAMI, Tracelet, Flash), SWCC exploration from 2009 to 2014.  Since 2015 exploration has been undertaken as the Tresviso Caves Project, a collaboration between multiple UK clubs and A.D.KAMI.


Any further information, to fill gaps, original survey data, photos etc. gratefully received.  

Please send to info[at]tresvisocaves[dot]info or get in contact via the feedback page.

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Latest......December 2019 - Tresviso 2019 report