Highest point: Haut-Folin (901m) in the Morvan. The Canal of Burgundy joins the Rivers Yonne and Saône, allowing barges to navigate from the north to south of France. Construction began in 1765 and was completed in 1832. At the summit there is a tunnel 3.333 kilometers long in a straight line. The canal is 242 kilometers long, with a total 209 locks and crosses two counties of Burgundy, the Yonne and Cote d'Or. The canal is now mostly used for riverboat tourism; Dijon, the most important city along the canal, has a harbor for leisure boats.