One of the few I believe I can see on Google satellite mapping.

Photograph taken by Peter Stockdale on 17 September 2016 and was added to the database on Saturday the 28th of January, 2017

Licensed under a Creative Commons Attribution-ShareAlike licence, see the terms of use

This photo is of Kilometre Post - La Rhone 33Km on the Canal du Rhône à Sète (Main Line)