The Langres plateau forms the watershed between the Mediterranean, the English Channel and the North Sea. Many well-known
rivers begin their journey here to the sea.
The source of the River Marne starts life in Balesmes-sur-Marne.
The source of the River Aube: near Aujeurres.
The source of the River Meuse: at Pouilly-en-Bassigny.
The source of the River Seine: on the way from Dijon to Châtillon-sur-seine.