The image shows a green train engine with the number 7121 on it. The engine is a diesel locomotive with a black caboose and a white stripe running along the side. It is traveling on a railway track with other railway tracks in the background. The sky is overcast and there are trees and power lines visible in the distance. The train appears to be in motion, as there are no other trains visible. The image is taken from a low angle, looking up at the engine.