Locomotive 44 058 at the back end of a tank freight from Burgas to Sofia. The machine helps locomotives 45 155 and 46 229 (both at the front end) to climb the steep gradient of the line between Septemvri and Vakarel with this circa-1300-tonne train. Vakarel, 5 February 2007.

Photo by Miroslav Georgiev (miroslav_sg@all.bg)