The Roman road, Sarn Helen, between Pennal and Llanio Roman military settlements (Nprn300159, 303530) (Margary RR69c). The road has shifted in response to the discovery of intermediate forts at Trawscoed and Penllwyn.

Source: Davies 1994 (in Cardigan County Hist. I), 311.

Includes sections at:
Erglodd (Nprn301325)
Brennan (Nprn301293)
Pyllau-uchaf (Nprn308513)
Penlan (Nprn309280)
Bronnant (Nprn260012)
Llanio (Nprn302935).

The continuation of the road south of Llanio is recorded under Nprn309268.

J.Wiles 30.10.03