We went to look for resurgences near the road to the plateau. We did find a couple of streams by walking off down the piste from the third hairpin bend right _up_ the road :-
Movement up the second streamway was severely hampered by felled pine trees and extremely forceful nettles. Somewhere around here is something marked "höhle" on the map....... [spot height 1137m on next road bend down. Cave on map marked at 1200m contour.]
What the map says v. what we found - suggest this is approached via footpath from Augst. A.H.