The corridor follows the valley of the Kinzig passing through Hersfeld, Fulda and Bebra, then continues down the Fulda valley to Kassel and finally runs along the course of the Leine to Göttingen. This trough is bounded to the west by the Vogelsberg-Meißner Axis or Hessian Central Uplands and to the east by the Thuringian Highland and Rhön Mountains.