It spans 25 kilometers and has three locks , of which only two remain .
The Canal de la Colme is made up of the Canal de la Haute Colme and the Canal de la Basse Colme .
Canal de la Colme spans 25 kilometers and has three locks , of which only two remain .
The Canal de la Colme is made up of the Canal de la Haute Colme and the Canal de la Basse Colme .