Changes

If you don't mind to a train take the regional train towards Ilmenau. Get off in Geraberg (40 minutes ride, ~5€) and follow "Bahnhofsstraße" in direction city center to it's end. Turn right on "Arnstädter Straße" and then the second left on "Talstraße". After passing the last house to your right, turn right on walk approximatly ten minutes to the gas stations "Thüringer Wald Nord". On your way you have to pass 'll cross beneath the autobahn but there is a tunnelAutobahn.