The eastern part of the Kuppen Rhön is the Thuringian Anterior Rhön, which reaches a height of at the huge plateau of the Gebaberg in the southeast. There is hardly any keuper escarpment there at all. The kuppen and plateaux rest directly on a bedrock of muschelkalk. This natural region runs northeast from the wide, pyramidal Pleß, , far into the Bunter sandstone of the Stadlengsfeld Hills that descend to the River Werra. In the west the Middle Felda Valley forms a natural boundary between Kaltensundheim in the south and below Dermbach in the north.