I don’t know when the quarry was first created, but we know that Trallwn Quarry was owned by Edwards Davids in 1880 and we have photographic evidence that the quarry had been established by 1900. Today, the quarry is operated by Hanson Aggregates, and is known to have manufactured a material called SMA used in resurfacing roads in South Wales. The quarry is also said to be famous for its blue pennant stone.
The River Taff flows along the eastern foot of Craig-Yr-Hesg, and it’s believed that this is the most likely location of Pont-yr-Hesg, “a great bridge of timber” described in the works of John Leland in 1540, but believed to have been destroyed by the late 1580’s.
If you’re reading this in the RSS feed, my original blog post also includes a Google map showing where this photo was taken. Unfortunately I haven’t managed to get the map to appear yet in the RSS feed, so for now you’ll have to click through to my blog if you want to see the map. Sorry.