Going back to link 132, that isn't Henlow. There are no hills in Bedfordshire and there are no woods near the airfield, nor were there ever.
I don't know where it is but I know where it isn't.........
I think the "hills" are an optical illusion. IMHO the actual spot where the photographer stood is still visible on Google Earth - Next to the low walled signal square with an H in it to the north of the row of hangers along the southern edge of Henlow Airfield.