The airfield was to the right of the forest as seen on Jim´s old aerial photograph.
Apparently, there were/are two different types of crops which produce two different shades of green; one light and one dark.
You can see the two shades of green on this Jasta 12 photo that are divided by the dotted arrows, forming an apex (red dot). Lighter shade above the dotted lines, and darker below them
You can clearly see the two shades on this Jasta 11 phot. Dark above, light below, and the"apex" clearly visible.
Amazingly, this survives until today. You can distinguish the two areas and the apex too! The yellow line indicates the direction of the Jasta 11 photo. P is where the photographer was located, and H where the hangars were in tha Jasta 11 photo.