Basically a "Lost Place", the way there is not signposted and only a weathered, illegible waystone points to a path from Feldrain into the forest. A little later you reach a rest bench, which hardly offers any more view due to the vegetation.
Below the knoll with the bank (and really well hidden) is a small cave in the rock.
In addition to @Gss's description. If you still want to go down to the cave, you should wear sturdy shoes and a bit of surefootedness won't hurt either.
This "LOST PLACE" is very well hidden, and should only be visited in dry weather, because the unpaved path is very slippery when it is slightly damp, and it goes down very steeply.
And on the rest bench, which is very weathered a little above, there used to probably be a hiking cross (the bracket with the sawn-off log is still there).