Serpentine Passage, the Shell Grotto
Introduction
The photograph on this page of Serpentine Passage, the Shell Grotto by Keith Edkins 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: © Keith Edkins Taken: 22 Jun 2015
A small portion of 4.6 million shells (I'll take their word for it) which line the cave which had to be lost in order that it could be mysteriously discovered