Simplify the following text for a Grade 11 native English-speaking person.
Original: The mountains themselves span the districts of Hochtaunuskreis , Main-Taunus , Rheingau-Taunus , Limburg-Weilburg , and Rhein-Lahn .
Simplified: The mountains themselves span the districts of Hochtaunuskreis , Main-Taunus , Rheingau-Taunus , and Rhein-Lahn .