Landslide on Graig Road between Godre'r Graig and Ystalyfera
Introduction
The photograph on this page of Landslide on Graig Road between Godre'r Graig and Ystalyfera by Nigel Davies as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Nigel Davies Taken: 10 Sep 2009
In 1965 part of Mynydd Allt-y-grug slipped down over this section of road sweeping away all the houses either side of it. The road has only ever been reopened as a much narrower path for light foot traffic. In the photo you can see how much the landslide has reduced the width of the road. However this is not the whole story: a few hundred yards further back the road is a third wider again with a pavement on both sides. The landslide is thought to have been triggered when a water main supply was accidentally ruptured, allowing water between layers of otherwise impermeable rock. Even now at the southwest end of the landslip there are extra drainage pipes running down the mountain to help prevent further occurrences.