Coto minero de Irugurutzeta Historical milestone · Irun, Bidasoa Beherea / Bajo Bidasoa, Gipuzkoa Mining district already worked in Roman times for iron extraction, which reached its peak activity between the late 19th and mid-20th centuries, before its final abandonment in the 1940s. It preserves the largest number of ore-roasting kilns in the whole Basque Country. It is visited via the mining train that departs from the Oiasso Museum toward the Aiako Harria nature park. Photo: Ksarasola (CC BY-SA 4.0) What to see and do in Irun