La Porte du Der
La Porte du Der is a commune in the Haute-Marne department of northeastern France. The commune was established on 1 January 2016 and consists of the former communes of Montier-en-Der and Robert-Magny.
La Porte du Der is a commune in the Haute-Marne department of northeastern France. The commune was established on 1 January 2016 and consists of the former communes of Montier-en-Der and Robert-Magny.