New map of suggested ancient glaciation

This map was made for an article by Lionel Jackson and myself in Earth Magazine -- strangely, the colours have gone mad. And the key has disappeared. Never mind -- you can still see the postulated ice cover, the postulated erratic train transportation route, and the Mynydd Preseli source area for some (indeed the majority) of the bluestones for which we still have physical evidence at Stonehenge.

Some of the evidence for glacial traces in the South-West is to be found here:

http://www.brianjohn.f2s.com/enigma4.html

The references to the relevant scientific papers are in the book!