Nestled in the westernmost corner of the Basque Country, Karrantza boasts a stunning rural landscape. This charming landscape also hides a significant industrial heritage, exemplified by the former Dolomitas factory, now a museum. This industrial site is inextricably linked to the record-breaking Pozalagua Cave, creating a unique coexistence. Today, both sites are living examples of how industrial heritage goes beyond machinery and production areas. It’s the fusion of these elements with the landscape, the raw materials and, ultimately, the history of one of the Basque Country’s industrial giants, Altos Hornos de Vizcaya.