The Picos de Europ is a range of mountains 20 km inland from the northern coast of Spain, located in the Autonomous Communities of Asturias, Cantabria and Castile and León, forming part of the Cantabrian Mountain. Almost all of the rock in the Picos is limestone, and glacial action has contributed to create an impressive area of alpine karst. (Wikipedia).
Photogrammetric survey: PNOA © Instituto Geográfico Nacional-Junta de Castilla y León.
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