Road between the Roman military stations at Caerhun (CANOVIUM)(Nprn95640) and Tomen-y-mur (Nprn95476), thought to pass through Caer Llugwy (Nprn95274).
Margary RR69a
Line of route thought to be overlain by more recent track/roadways; possible road ditches encountered in excavation at Beddau Gwyr Ardudwy (at SH72344251).