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Description: This route goes from Mutriku to the Aranzazu Sanctuary, crossing the border between Bizkaia and Gipuzkoa, and links the Cantabrian Sea with the Aizkorri-Araz Natural Park. Along this route the Arno conservation area and the industrial areas of the Alto Deba intersect, with a long industrial history, where you can see the remains of old salt mines, the steel industry or blast furnaces.
Points of interest: