The night is falling on the Atacama desert while a sulfuric acid tank train is nearing the end of its trip from Potrerillos to the "Mina Franke" copper mine.

Traveling the Atacama Desert, at the foot of the formidable Andes Range, this train carries much needed sulfuric acid for the production of copper to the Mina Franke mine at Altamira.

I love Black & White

I love Black & White

You can compare with the color version here.

Two old semaphores stand useless on the desert floor, whereas most of the tracks that they used to protect have been removed a long time ago.