Explore details about location Heol-Y-Delyn. Heol-Y-Delyn is a location situated within the Carmarthenshire alongside other areas such as Berllan, St Catherine's Walk, Water Street. Additionally, some smaller parts of Heol-Y-Delyn include specific areas like Richmond Close, Groesffordd Fach, Parc Yr Onen adding to the diversity of its landscape.