X-37399 --- This one is the last of the four new oil-fired steam locomotives which have been ordered to ease the load on the existing X class locomotives of NMR. They are basically of the same design like the older X Class 0-8-2T rack and pinion compound engines, this one bearing road number X # 37399 was rolled out on 5th March 2014 at the Central Workshop, Ponmalai, Tiruchchirappalli. Spotted waiting at Cunnoor for its next assignment. Photographed by Somsubhra Das. D.O.P. - 24th October 2015.