Gilfach Ddu
…gauge Dinorwic Railway was built in 1824, connecting the quarry to the coast at Port Dinorwic. This was replaced in 1843 by the 4 ft (1,219 mm) gauge Padarn Railway running along the shore of Llyn Padarn and on to Port Dinorwic. In 1848, steam locomotives were introduced on the railway. Between 1869 and 1870, the…