I will close this challenge. The mystery aerodrome is Knokke Het-Zoute, Belgium. The aerodrome was popular with sport aviators, and hosted a flying club. It its heyday, charter passenger and freight aircraft operated from the grass airfield. When crossing from England, it was the first Belgian airfield available. Closing in 1960, the airfield boundaries are little changed when looking at Google Earth. Nothing remains of the structures or concrete aprons. It presently borders a Provincial Nature Park, hosting many storks.
brakedwell can post a challenge.
