On 10/12/15, Constantinos Ragazas
<[log in to unmask]> wrote:
> If the location of this mill is "few hundred yards up the valley" from Crag
> Rhosyfelin and built "into the slope above a stream", this would be strong
> evidence the stream (flowing some 50 yards from the Rhosyfelin rock face)
> was at the time of the mill operation much wider and deeper. And this wider
> river would likely engulf Crag Rhosyfelin in water. Raising serious
> questions if the Rhosyfelin rock face could possibly have been a "bluestone
> quarry", as Prof. Mike Parker Pearson has been claiming.
> This, of course, is not a proof of anything. But it is a call to question
> the current claims. And a call for further independent research into the
> "quarry" idea of MPP.
Sorry, Kostas, this isn't evidence that the stream would be wider and
deeper. If the building was a mill it might not have been a very big
one, and the power to drive the mill comes from the headwater in the
millpond. The mill stream that flows down beyond the mill wheel is
often quite small. I used to own part of such a stream from a fairly
large mill and the cross-section was about 1.5 metres wide and 0.6m
deep. The natural stream that was the overflow of the mill dam wasn't
particularly wide or deep either.
Either way, it would really require examination on the ground before
any deduction could be made regarding your assessment.