Explore details about location Heol-y-Plâs. Heol-y-Plâs is a location situated within the Carmarthenshire alongside other areas such as Marsh Road, Wogan Street, Beacons Way. Additionally, some smaller parts of Heol-y-Plâs include specific areas like Clos Ty Gwyn, Carmarthen Road, Heol Ty Llwyd adding to the diversity of its landscape.