In the second image, north is around 1 o'clock.
No Airport there any more. but you can still see the outline of the runway and the hangar shown dead centre of the second image.
dook - you need to read back my clue.
The "mountain" casting a shadow has (or had) the same name as a rather more famous "mountain" on another island. The documents I have has the airfield having the mountain name as part of it's name, so name that mountain
You know what the obvious island is, and the short version of mountain is?
Also
You are looking at the wrong end of "Japan".