The operation of the Touro copper mine Historical milestone · Touro, Arzúa, A Coruña Image of Touro, not of the place itself. The open-pit mine operated for thirteen years, from 1974 to 1986, between Touro and Cebreiro until the company ceased activity. It left behind lasting damage to the Ulla river system and the destruction of the Castro da Copa. 1974-1987 Photo: Bene Riobó (CC BY-SA 4.0) What to see and do in Touro