Chuquicamata is one of the largest open-pit copper mines in the world and is located only 16km north of Calama. The huge chasm cut seemingly to the core of the earth produces more than 600,000 tons of copper annually. There are massive trucks with wheels almost four meters high hauling the ore from the crater’s floor. Chile’s government-owned copper corporation Codelco owns this site and a nearby town with its own school, hospital and movie theater for employee families, though they will eventually be moved to Calama to allow for more excavation.

Colectivos run from Calama's main square to Chuquicamata. The ride takes almost 20 minutes and cost approximately $1.50. Calama’s tourist office can make a reservation for a tour through Codelco, which has an office for bookings too at the corner of Tocopilla and Carrera (Tel: 55-327469, Monday - Friday 8:30-11:30 a.m. and 3-5 p.m.). Tours generally last 90 minutes. Be sure to book in advance during the high season in January and February.