As well as the international demand for Welsh slate, between 1780 and 1940 the area was also home to a number of ingenious developments in quarrying and stone processing and railway technology for mountainous environments.
The landscape of today has been transformed on a monumental scale due to hundreds of years of mining in the area. The nomination to UNESCO reflects this and the international significance of Welsh slate in ‘roofing the 19th century world’.
The Slate Landscape of North West Wales has now been formally presented to UNESCO as the UK’s next nomination for inscription on the World Heritage List by the Department for Digital, Culture, Media and Sport (DCMS) in cooperation with the Welsh Government and Gwynedd Council.
The site will now be considered by the International Council on Monuments and Sites over the next year before being considered for inscription at the World Heritage Committee meeting in 2021. It is anticipated that a decision on the future status of the Welsh Slate Landscape will be taken during the 2021 UNESCO World Heritage Committee meeting.