This is a little hidden gem. After you have gone a seen the two Ruine Fragenstein come back down but continue to this tunnel. It takes you under the Ruine …
The Schlossbachklamm was closed for a while due to rockfall, but is now open again. To be on the safe side, call TVB Seefeld beforehand to make sure it is not closed.
Picturesque historical climb down into the Sill gorge along the waterfall at Viller Bach, which offers some unusual views of the ski jump and the Nordkette.