No train in sight. But a roar in the distance, getting louder. Slowly, the locomotive creeps around the curve right outside the station of Samper. Car by car the train appears, 17 in total, maybe 1300 tons. The roar gets louder, 16 cylinders, 170 liters of EMD 645 two-stroke power at work, trying to gain some speed while battling a constant uphill grade. Cameras click, and for a few seconds we can enjoy the full show while el Carbonero passes underneath our bridge.