Hi Martin,
I''m just finding out about Ballintaggart Court Tomb, despite having grown up just over the Armagh Road, in Derryhale, and spending time as a child playing along the old railway line just south of the quarry.
It has been a while since you posted, but I wonder if you ever found those documents on the 1966 archaeological survey/excavation of the site to show your uncle?
I''ve just located them myself after a bit of sleuthing. They are linked on this page:
https://apps.communities-ni.gov.uk/NISMR-public/Details.aspx?MonID=5280
This academic paper contains a photo of a ''carinated bowl'' found at the site:
https://www.academia.edu/3417464/Neolithic_connections_along_and_across_the_Irish_Sea
Would love to connect with you and hear more about the road you found.
Something is not right. This message is just to keep things from messing up down the road