Merthyr, Tredegar and Abergavenny Railway, The

Description

Yr oedd adeiladu rheilffordd Merthyr, Tredegar a’r Fenni yn gamp beirianyddol nodedig. Yn un o’r rheilffyrdd mwyaf ysblennydd ym Mhrydain, yr oedd hefyd yn un o’r anoddaf i’w adeiladu ac, oherwydd y graddiannau hir a serth, dyma un o’r drutaf i’w weithredu.
The construction of the Merthyr, Tredegar and Abergavenny Railway was a remarkable engineering achievement. Not only was it one of the most spectacular railways in Britain, but it was also one of the most difficult to build, and its long and steep gradients made it one of the most expensive to operate.