A picture of Llithfaen, in the county of Gwynedd

Nant Gwrtheryn is on the northern coast of the Llŷn Peninsula, Gwynedd, in northwest Wales. It is sometimes referred to as 'the Nant' and is named after the valley where it is located, Nant Gwrtheyrn ("Vortigern's Creek"), which lies in isolation by the sea at the foot of Yr Eifl. The quarry named Nant Gwrtheyrn opened in 1861, and was serviced by a village on the site, the quarry produced setts used for road surfacing. The community lived an isolated existence, with supplies shipped in and goods shipped out via the Irish Sea, meaning the villagers had little contact with the outside world. The quarry closed early in World War II, partly due to a drop in demand and also to transport difficulties. After the quarry was closed, the community dispersed and the cottages fell into disrepair. Nant Gwrtheyrn is now a Welsh Language and Heritage Centre,

Gwynedd