Roman road running along Twyi Valley between Llandovery (Nprn92853), at SN76983516, & Carmarthen (Nprn94432), at SN41642034.
Part of Margary RR623 (Nprn304501).
Includes/comprises - Nprn86911-86920.
Uncertain segment at Blaenos discussed under Nprn86137.
Sources: Margary 1957 (Roman Roads in Britain II), 71-2;
Jones 1972 (CA 8), 3-16;
James & James 1984 (CA 20), 23-7
James 1991 (in James (ed.) 'Sir Gar'), 64-8.
J.Wiles 03.08.04