Chuquicamata copper mine in Chile
The Chuquicamata copper mine in northern Chile is the second largest open pit copper mine on Earth. The enormous extent of the pit testifies to the huge mass that has been removed. Covering an area of about 13 square kilometres, the rock has been mined to a depth of over 850 metres. The city of Calama can be seen in the centre of the image, approximately 10 kilometres from the open pit.