Chemin de fer de la Baie de Somme 

A visit to the Baie de Somme railway on the northern French coast. There are two unique featuers of this excellent line. First, the line from Noyelles to St Valerie is dual gauge, standard and metre gauge, and standard gauge trains can still run straight through from the SNCF Calais - Paris main line. Secondly, there is a lifting bridge that crosses the Somme canal at St Valerie and it has dual guage track on it.