Number 4 sets off from the quarry with a loaded train. It has just arrived with the train of empties on the right which will be drawn into the tunnel by cable once number 4 has left. The gantry at the top of the picture is a part of the loading machinery. With cheap air fares and low cost accommodation a trip to Beijing to visit this railway need cost little more than a week in Wales and with the line so close to the city centre it is an easy journey.