A diesel locomotive SIEMENS "Herkules" with number 2016 090-0 , owned by private operator RCC (Rail Cargo Carrier) , standing in depot Stara Zagora , before running a trial tests. After that , the mashine is due to pull freight trains onto non electrified lines in Bulgaria. Digital photo Veselin Malinov , e-mail: malinov.veselin99@gmail.com