Bwlch y Rhiw is located on the road from Rhandirmwyn to Pumsaint. In 2017 the chapel celebrated its 300th year. The remoteness of this chapel was captured by the renowned Welsh hymn writer – William Williams Pantycelyn when he was travelling past the chapel on route to preach in another county:
‘Cul yw’r Llwybr i mi gerdded, is fy llaw mae dyfnder mawr ‘
The Rev. Zachariah Thomas saw the first baptism at Bwlchyrhiw in 1737. He later served as minister at Bwlch y Rhiw for 59 years, and is buried in the graveyard. More recently, the Rev. W.J Gruffydd, former Archdruid of the National Eisteddfod, was a minister (1972-75) and is also buried in the graveyard. An informative 20 page illustrated booklet is available (Welsh language only). To obtain a copy, write to: Ann Jones, Troedrhiwhir.