Author 'Jean-yves.goupilleau' : The site of the lock of the Mail in centre of Rennes (Ille and Vilaine). Situated in the Canal of Ille & Rance, built 1804 a 1832 for traversing of Brittany, the channel has the Atlantic via the Vilaine (53 locks on 238 km). More photo editing: automatic cropping and straightening.