Haute-Saône Keuperian coal mining basin
47°23′42.83″N 5°37′23.85″E The Haute-Saône Keuperian coal mining basin constitutes the coal basins from the Vosges and Jura. From a geological perspective, it represents the most recent of the two coal deposits in Haute-Saône.
Source: Wikipedia — Haute-Saône Keuperian coal mining basin (CC BY-SA 4.0)