What is "cyfarthfa"

Cyfarthfa is a community of the county borough of Merthyr Tydfil, in Wales. At the 2001 census, it had a population of 6141, increasing to 6,869 at the 2011 Census. Cyfarthfa mainly consists of the settlements of Gellideg and Heolgerrig.

Cyfarthfa has strong historical ties to the industrial past of Merthyr Tydfil, and was the site of Cyfarthfa Ironworks.