You're looking for a 30ml plastic container, with a log and a pencil.
It's hidden in an area of off-road parking, with few muggles or on-lookers, and completely accessible terrain. Full permission has been given.
Approach from the road implied by the title - you won't get to it any other way!
Aquila is Latin for 'eagle' and is the name of a constellation. There aren't any eagles at the cache, but you may well see a pair of red kites flying and squeaking to each other overhead.
Let me know if you see them!
FTF - Congrats leeroy71 - yay! Couldn't have happened to a nicer chap!