Ynysybwl branch line railway

The Ynysybwl branch line railway, formally known as the Clydach Valley Branch, was opened by the Taff Vale Railway company in 1885 to serve collieries that were expected to open in the Clydach Valley, Glamorganshire, South Wales. The branch line made a junction with the main line of the Taff Vale Railway at Stormstown, between Pontypridd and Abercynon. In fact the colliery development was limited, but the Lady Windsor Colliery became productive in 1886 and had a large output.

This keyword could refer to multiple things. Here are some suggestions: