Hastings to St Leonard's Warrior Square 22 6 2023

St Leonard's Warrior Square station is where the tiny silhouette of a train can be seen at the far end of the tunnel. That station sits between two tunnels, so you can see the shadow of the curiously-named Bo-Peep tunnel beyond the train.
Across about half of the south of England, the electrical power supply for trains comes from a third rail, on the outside of the running track. In stations the third rail is positioned on the side of the tracks furthest from the platforms. On other stretches of track the third, power rails are often on the outer edge of the tracks, as can be seen in the area of the bridge in the view above. The railways have to maintain fencing all the way along the tracks and post warning notices about the dangers of touching the live rails where ever the public may get close to railway lines.