Matienzo
From Wikipedia, the free encyclopedia
Matienzo is the name of a village and a karst depression some 25 km southeast of Santander in northern Spain. The limestone around Matienzo is riddled with caves (up to 49 km in length) which have been extensively explored over the last 40 years by Spanish and English cavers.
[edit] External links
Information about the area and more than 2800 caves, along with research details, cave surveys and thousands of photos can be found at the Matienzo Caves site [1] and a summary article read at [2]