One of the many railroad monuments in Uyuni (Bolivia).

The worker is holding a wrench and a train steam engine wheel.

Uyuni used to have the largest train yard in Bolivia, at the time where steam trains were a primary mode of transportation. Now the train lines in Bolivia are falling into disrepair and few trains still run (very slowly) on the old tracks. The Uyuni train yard is mostly abandoned, and Railroad Monuments like this one all around the city are reminders of its glorious railroad past.