Late in automn I walked from Grindelwald to Wengen crossing the Kleine Scheidegg, more or less following the Grindelwald - Wengernalpbahn.

At the end of my walk in Wengen I finally took the Grindelwald - Wengernalpbahn which brought me down to Lauterbrunnen. The Berner Oberland-Bahn brought me then down to Interlaken.

You find more information about the gauge rack railway line in

http://en.wikipedia.org/wiki/Wengernalpbahn