factor in leading to the construction of the dual carriageway between these points. The section of the A465 from Hirwaun to Llandarcy is all dual carriageway.

The highest point (signposted) of 1350 ft is on the Ebbw Vale section which is now dual carriageway and slip roads between Dowlais Top and Tredegar via Rhymney. At Dowlais Top there are link roads such as the A4060, which runs down to the south end of Merthyr Tydfil and