Gavà Mines

The Gavà Mines, also known as Can Tintorer Mines, is a pre-historic archaeological site that occupies the Can Tintorer, Ferreres and Rocabruna areas in the municipality of Gavà. The site is under care of the Gavà Museum and the Gavà Mines Archaeological Park.

The main feature of the site is a collection of ancient mines that are among the largest and oldest in Europe. The site is spread over 200 hectares and comprises more than a hundred known mines, with many more possibly to be still unidentified. Among them are the only known Neolithic mines of variscite, a green mineral used to make body ornaments.

From the Iberian and Roman times through the Middle Ages, the mines were re-exploited to obtain iron ore.

Source: Wikipedia