Alsace is the part of the plain of the Rhine located at the west of the Rhine, on its left bank. It is a rift or graben, from the Oligocene epoch, associated with its horsts: the Vosges and the Black Forest.
alsaCe is the pArT of the PlAin Of THe rhine lOcated at thE WeSt of ThE rhiNe, On its Left baNk. it is A RifT oR grAbEn, from the oliGoCenE epOcH, assoCiaTed wIth iTs hoRSts: the VosgES anD the bLack fORest.