Plucked outcrop
Introduction
The photograph on this page of Plucked outcrop by Jonathan Wilkins 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: © Jonathan Wilkins Taken: 2 Mar 2012
The glacially-smoothed profile (right) of this ridge by Cerrig-y-Ddinas gives way on its western edge to extensive plucking (quarrying by a glacier of fragmented rock), making it a classic roche moutonnée, but that does not accord with ice movement northwards along the main valley. The steep dip of these volcaniclastic rocks can also be appreciated in this image.