toeklk
Hmm, it's unclear to me how the boundary of the protected area has been determined.  Not sure what you mean with 'sign number', but the sign is a green hand (stop!).  However, it seems the sign is not a part (anymore) of https://www.natuurenbos.be/toegankelijkheidsborden.  Indeed, access from south to north forbidden, but no sign on the north side (afaict) 