Stp Prinz Eugen I - KVA A3

[Von Kluck]

Hello
Here's the aerial view of Stp Prinz Eugen I.
To the left we see the last open emplacement of HKB Vosseslag. Next to it there is a R636. What was the function of this one? No Leitstand for the battery as there is already a HKB Leitstand Type 2 inside it (between the open emplacements). It seems to play an important role as there are 2 Schartenstanden (R612 without flanking walls?) built at the bottom and covering it.
There is also a Vf Beobachtung to the right. It should be the B-Stelle for one of the divisional batteries of AR 148 located further inland. Maybe 1./AR 18 at Klemskerke? Or 9./AR 148 at Vlissegem (Stp Tilsit)? Or Beobachtung for III. Abteilung/AR 148 headquartered at Stp Fuchs?
Any information should be welcome.
Regards
Von Kluck