Located in São Domingos (province of Alentejo) south of Lisbon, capital of Portugal, the mine of Achada do Gamo is an abandoned open pit mine. Located in the heart of the Iberian Pyrite Belt, which extends from southern Portugal to Spain, the region of the mine consists of the outcropping volcanic and sedimentary rocks that vary in age from 542 to 251 million years.
The history of mining in the area dates back over 4300 years when Phoenicians and Carthaginians already harvested copper during the Chalcolithic period (Copper Age).