On the way..
Wutach Valley Railway steam locomotive train. The Wutach Valley Railway is popularly known as the Sauschwänzlebahn, literally the Pigtail Line, because of the wide-ranging convoluted route. This was necessary to keep the gradient below 1%. The distance of 9.6 km as the crow flies was extended to a track length of more than 25 km by means of curved sections, terminal loops and a loop tunnel.