Hi Pierrot
Great aerial! Thanks a lot!
Do you have a date on this picture? Because again it raises a lot of questions.
I've already made a GE map of the area before I registered on this forum based on the information of the Group Marc. Overlaying your aerial shows my map was quite accurate concerning the positions of these bunkers. But apparently the Group Marc as well as the book "Atlantikwall in Zeeland en Vlaanderen / sakkers&houterman)" was wrong about the types of bunkers being present. The two 622 being mentioned in this stronghold seemed to make sense, but I also doubted - which would be my next question - the presence of two 613. The 613 isn't fit to carry a canon and it was shure two 'casemate pour canon 4,7cm/7,7cm' were standing here, the two 613's in addition to these two 'casemates' and the assumed two 622's would add up to 6 large bunkers standing here which contradicts gouvernment information on the demolishion of these bunkers. (Although your aerial shows more than 4 bunkers standing here, I'll have to inform with the local gouvernment about this)
Also clearly seen on your map is the watersuply "le chateau d'eau" as mentioned by the Group Marc. This was already present during WW1. I have a picture of the whole area post WW1, I'll be glad to share it with you.
Another mystery of mine solved. Before you sent me this aerial I already found a cutout of the 617 and the chappel-like building. I doubted that this cutout-aerial could have been De Panne because of the 'chappel' of which no records where to be found, even the local gouvernment confirms that no chappel was ever built on that location. That means that the chappel-like building on your aerial is in fact the German garage camouflaged as a chappel. The Germans done a good job at it even to fool a local

. Glad to see that one solved.
Which might interest you; the bunker I asked about on my post 'which bunker is this', which appeared to be a 502, should be located just right of the ruins on your aerial. According to locals it still exists and is underneath the foundation of the appartementbuilding 'Montreal'. If I do an overlay in GE it must be about here: (nothing to see though??)

One of my questions about your aerial: on my original picture in this post the villa "Les Oyats" (with the tower) can clearly be seen, this is a post war picture. Strangly it is no longer present on you picture, that's why I ask about the date.
(The Group Marc states that 2 villa's and the hotel "De Kursaal" were still standing here during German occupation. One of those villa's is known to be the villa "Les Oyats", the other one was presumed to be the villa "Bel Air" which was demolished by the Germans during the occupation according to locals, the hotel "De Kursaal" was wrongly indicated by the Group Marc and lay one housing block to the right.)Another photo I found on the net which claims to be taken in De Panne:

This is in my opinion the Leitstand as seen in your aerial. The houses in the background indicate that it must have been in the near aproximity of the aglomeration of De Panne. Although no such houses can be seen on your aerial. The WW1 picture I have show two possibilities to what the houses in the background could have been. It was eihter the villa "Bel Air" which had to be still present at the beginning of the occupation or it were the small fisherman cottages as seen on the WW1 picture. If the picture above is in fact taken in De Panne it should have been taken in the early years of the German occupation. (Notice; according to the perspective in which this picture was taken the villa "Les Oyats" - which was sure to be there at the time - is just on the right out of frame.)
What fun it is to dig into history
grtz & many thanks
jean