jock78 wrote:The term 'Dun' really clinches it as it is old Britonic (old welsh) for 'fort' such as at Dunbarton.
Well exactly!
I found the attached map from NLS which shows the site of Dunchatten as a mound even higher than the necropolis and well to the east of it.
Good find! I'm not sure how you can tell heights from that map, but I do wonder if the two hills were part of one large fort, then possibly the entrance was on the south side where the street (presumably Firpark) is shown? That's pure speculation of course, but it would make sense as it would dominate the main road into Glasgow from the east.
Yet if you look at this one from 1795 the whole area seems like one complete hill. This can be seen even more clearly in Roy's military map of 1795. There's just a hint of a gulley visible on both.
I'm not convinced we'll ever find evidence of the hill fort without major archaeological investigation, other than the etymology of 'Dun Chattan'. But that's good enough for me.