The direct route from A to B is not always the best. If the gradient is too steep, an additional loop is an advantage. Around 1906, for example, the engineers used this spiral-shaped track guide t... (more)
The Chemin de fer du Vivarais Mallet steam locomotive #404 has been built in Switzerland by the SLM in Winterthur (works no. 1492) in 1903. The locomotive has been in service on this line between ... (more)