The Antamina Mine is located in the Antamina canyon in the district of San Marcos, province of Huari, in the Ancash region. The deposit is one of the largest copper-zinc ore bodies in the world. Antamina employs 1,400 people directly and 3,500 indirectly. The mean annual temperature of the area is about 3°C, with a minimum of -30°C. Mean annual precipitation is approximately 884mm (recorded at 3,980m), is mainly between October and May. Topography ranges from humid forest in the valleys and alpine fluvial tundra to very wet sub-alpine formations at higher levels.