Historical Maps: Railroad Spiral Tunnels of the Gotthardbahn, 1914
In my previous post, I mentioned that the map of the Gotthardbahn showed the spiral tunnels that the track uses to quickly change elevation in areas with limited space. Here are some fantastic maps of those spirals, taken from a 1914 German encyclopaedia and found on Wikipedia. The maps show the spirals from north to south, with the distance in kilometres from the northern end of the line clearly shown along the route. The Gotthard […]