The vintage steam train continues emerging from the existing stone tunnel and rolls steadily forw...

The vintage steam train continues emerging from the existing stone tunnel and rolls steadily forward along the curved railway. The locomotive wheels and connecting rods move rhythmically and correctly, while dense steam rises from the chimney and trails backward with the train's motion. Warm silhouettes of passengers remain visible through the glowing carriage windows. The camera smoothly tracks alongside the locomotive as it approaches the viaduct, keeping the train geometry stable. Waterfalls pour continuously into the river below, the river current moves through the valley, sheep make small grazing movements, smoke rises from distant village chimneys, trees respond gently to wind and large clouds drift slowly overhead. Preserve the exact train, railway and landscape; no additional carriages, no warped wheels, no rail deformation.