The Roșia Poieni copper mine is a large open pit copper mine in the centre of Romania's Transylvania region, 90 km (56 mi) northwest of Alba Iulia and 484 km (301 mi) north of the capital Bucharest. Geographically the mine is located in the Apuseni Mountains, 7 km (4.3 mi) south of the Arieș River in Lupșa commune.