Well, yes this patch exists in reality. I can even see it on the right aerial photos. If there is a way in this portal, I could send you a copy. Problem is that too many users here rely on aerial photos instead of having insight in the reality on the ground.

Great for you that you are so brave to make your way down there. It would be absolutely irresponsable to pretend for other people that there is a suitable path. Besides, it is in a nature conservation area and therefor illegal. No matter if people are using it or not. Please respect nature and other people. You may still use the path, but please don't drag other people in there by marking it publicalle.
End of message for me.

Since this all in a nature conservation area, the trees won't be removed.
So yes, a "detour" is unavoidable. There is no safe an legal way to go donw the Weiße Mauer on the northern side.

I guess you haven't tried to walk this path lately? It definately doesn't exist any more. Numerous trees have fallen an it in the lower part. No way to walk around!!!