Tredegar
Tredegar is a town in the county borough of Blaenau Gwent, situated on the River Sirhowy in the Sirhowy Valley in south-east Wales.
Rhymney
Rhymney (Welsh: Rhymni) is a town and a community located in the county borough of Caerphilly, in south-east Wales, within the historic boundaries of Monmouthshire. Along with the villages of Pontlottyn, Fochriw, Abertysswg, Deri and New Tredegar, Rhymney is designated as the 'Upper Rhymney Valley' by the local Unitary Authority, Caerphilly County Borough Council. As a community, Rhymney includes the town of Rhymney, Pontlottyn, Abertysswg, Butetown and Twyncarno.[1]
Information by Wikipedia.com