The Irfon defines the northern border of Builth - Wells - area between Llanwrtyd - Wells and Mynydd - Epynt . The Irfon defines the northern limit of the Builth Wells area between Llanwrtyd Wells and Mynydd Epynt .
Irfon mentakrifkan sempadan utara Builth - Wells - kawasan antara Llanwrtyd - Wells dan Mynydd - Epynt. Irfon mentakrifkan had utara kawasan Builth Wells antara Llanwrtyd Wells dan Mynydd Epynt.