At the end of the approximately 2 kilometer long loaded iron ore train M4 from Zouérate/F'derîk to the port of Nouadhibou, pulled by SDL40-2 CC # 109, 103 and 117 in multiple control, are a green air-conditioned staff car and a very run down passenger car. The train is only few miles from the destination now, after a journey of about 16 to 20 hours. Not visible on the right is the Atlantic ocean, only about 4 miles away.