Train Station Chief using the old telephone in the San Antonio de los Cobres train station (Argentina).
Yes, it still works! And it's the only telephone that connect with the other stations of the line. It requires no power, just a hand-craked dynamo to call out.
This train line is sometimes called "Tren a las nubes". For more information, read en.wikipedia.org/wiki/Tren_a_las_Nubes
Photos taken in Argentina in Februaty and March 2010.