Doubs is a department in the Bourgogne-Franche-Comté region in Eastern France. Named after the Doubs River, it had a population of 538,549 in 2016. Its prefecture is Besançon and subprefectures are Montbéliard and Pontarlier.
Wikipedia https://en.wikipedia.org/wiki/Doubs
Coordinates 47°14'16.88" N 6°1'27.704" E