What I think to be another large glacial erratic, brought here by ice thousands of years ago. It is of the typical description, large boulder, rounded and made of non-local stone (i.e not flint). I would imagine it was dug up locally and just placed by the roadside.
Uploaded to Geograph by Ashley Dace on 19 August 2010
Photo © Ashley Dace, 19 August 2010. Licensed for reuse under this Creative Commons licence