Zaharna Fabrika (Sofia), 11.08.08  
View of the tracks towards the road bridge (bul. Slivnitsa). In this direction,
the tracks reduce to only one track for the steep climb up to Vladaja. Therefore,
often a helper engine is coupled here to the rear of a train. 
 
Photo by M.R.Koblischka (m.koblischka@mx.uni-saarland.de)