The video shows a train moving through a tunnel. The tunnel is dark and the train is moving at a high speed. The train is emitting a lot of smoke and steam, which is filling the tunnel. The train is moving on a track that is visible in the foreground. The lighting in the tunnel is dim, with only a few lights visible in the distance. The train appears to be a passenger train, with multiple cars visible in the frame. The smoke and steam are thick and heavy, making it difficult to see the train clearly. The train is moving at a steady pace, and there is no visible sign of any other train or object in the tunnel.