est ▁ad hes ion ▁worked ▁section ▁of ▁the ▁line . ▁ ▁After ▁L ung ern ▁station , ▁a ▁second ▁ra ck ▁section ▁lif ts ▁the ▁line ▁to ▁its ▁sum mit ▁at ▁Br ün ig - Has li berg ▁station ▁in ▁the ▁Br ün ig ▁Pass . ▁Bey ond ▁the ▁pass , ▁the ▁line ▁desc ends ▁its ▁third ▁and ▁final ▁ra ck ▁section , ▁down ▁the ▁ste ep ▁side ▁of ▁the ▁valley ▁of ▁the ▁A are , ▁to ▁Me ir ingen . ▁This ▁is ▁the ▁ste ep est ▁ra ck ▁worked ▁section ▁of ▁the ▁line . ▁At ▁Me ir ingen ▁station , ▁the ▁Br ün ig ▁line ▁revers es ▁direction ▁with ▁trains ▁both ▁entering ▁and ▁leaving ▁the ▁station ▁from ▁the ▁west ▁end . ▁The ▁Me ir ingen – In n ert kir chen ▁Railway ▁( M IB ) ▁connect s ▁here , ▁leaving ▁the ▁station ▁from ▁its ▁eastern ▁end . ▁Although ▁there ▁is ▁a ▁track ▁connection ▁between ▁the ▁two ▁lines , ▁they ▁are ▁elect r ically ▁in compatible , ▁and ▁no ▁through ▁trains ▁operate . ▁ ▁From ▁Me ir ingen ▁to ▁B ri enz ▁the ▁line ▁runs ▁close ▁to ▁the ▁A are , ▁in ▁that ▁river ' s ▁valley . ▁At ▁B ri enz ▁station , ▁the ▁starting ▁point ▁of ▁the ▁B ri enz ▁Roth orn ▁Railway ▁is ▁beside ▁the ▁Br ün ig ▁railway ▁station . ▁The ▁two ▁lines ▁are ▁of ▁different ▁gau ges , ▁and ▁there ▁is ▁no ▁track ▁connection . ▁Bey ond ▁B ri enz , ▁the ▁Br ün ig ▁line ▁runs