-=|MisterY|=-: I was talking about the northernmost walls, to the right from the part you're talking about. Of course I've checked all available imageries - of which I've found "basemap.at Terrain" the most useful.
(A side note: Bing is off by at least 20 metres here.)

PPete2: I dit it now. I just thought some Austrian may confirm my observations or even survey the walls on the ground.