56331 was one of 88 2-10-0s built for TCDD by Vulcan Ironworks in 1948. The 56301 Class were the heaviest locos on the Turkish system with a 20 ton axleload and worked the Zonguldak line and the main line east to Kayseri and Sivas. By the mid-1980s most of their work had been taken over by diesels but it was still possible to find a few in action on the Zonguldak line.
The loco is seen here working a freight north from Irmak towards Cankiri on the line to Zongulak, late on the afternoon of 22 April 1984.