Rappenlochschlucht is one of the largest gorges in Central Europe. The Floating Walkway is a trek which is an absolute treat to the eyes, alongside a river. The entrance of the walkway is located in Gutle and the end of Rappenlochlucht is Staufensee. I would suggest you to get down here and take the walkway down to Gutle. The trek is easy and will take around 2-3 hours.