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Not being a geologist I can't debate the pros and cons of the arguement set out in this article, except to say that when I made my visit to the Presceli Hills, it struck me that, with such a ready sourse of numerous, ideally shaped stones, there would have been no need for those entrusted with the task of selecting and transporting them to Stonehenge, to search further afield.
Beyond that, when I searched for a probable overland route to a suitable launch site, I found that even in that deeply riven area of Wales they would have only had to cross one slope sided ravine to reach an ideal launch site on the nearby River Cleddau.
In closing I make the point; with so much readily available material so easily obtained and moved to such a suitable site for preperation for a voyge, why would our ancesters have gone as far as Snowdonia or other hard to reach parts of Wales?
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