The Tunnel of Mauvages is a river tunnel on the MarneâÂÂRhine Canal. It is 4,877 meters long and was built from 1841 to 1846 near the city of Mauvages, Meuse department. The tunnel is equipped with a bipolar 600 volt overhead wire for electric vessels https://www.binnenschifferforum.de/showthread.php?36891-1-Rhein-Marne-Kanal-(Vorstellung).