On 03/11/2014 12:19, John Wood wrote:
> So why can't there have been additional, perhaps organic, features to the
> original site that might support Orion's case?
> Or would such a radical idea stone, sorry rock, too many boats?
> On 3 Nov 2014 10:19, "Michael" <[log in to unmask]> wrote:
There could be. But the easiest things to eliminate are those which
leave the best archaeological signature.
So, I thought it worth trying to find out whether there might be
anything that could tie in with Orions evidence of water in the ditches.
So, this is what I did:-
If one is to have a permanent water supply, one needs a permanent
conduit. Unless that conduit goes downhill, it needs quite significant
engineering constructions to raise the water and it is therefore highly
likely that some remains would be visible as there's a significant rise
from the nearest water in the Avon.
So, if there was a supply, it would likely have flowed naturally
downhill. So, I looked along the contour to find where such a supply
could derive and given the nature of the soil, it would have to be a
pretty substantial ditch so that it could be lined with clay. The
contour goes all over the place and through the main areas like the
Cursus, and I reasoned that anything there would have been found. And
given the length (I doubt any organic structure would be watertight
enough as I've no idea how far one has to go to get a stream to tap, but
it more than several miles. I would think such a ditch would leave a
crop mark over all those many miles as it hugged the contour trying to
find a stream from which to supply Stonehenge. There's no suggestion of
such a ditch.
So, next I started thinking of some mechanism to collect water much
closer using intense short-term showers. But if it were to flow "on
demand" this needs a fairly big structure in the form of a tank (which
again must be lined with clay). This would be along the same contour as
Stonehenge so as to maximise collection with a very shallow slope down
to the monument. So, you can very much track along the contour looking
for suitable sites for a large storage "pond" or "tank". Again, because
of the sediment, these should be fairly obvious and their location would
likely be in a valley where temporary run-off is most likely to occur.
So, there's no obvious sign of a feeder ditch along the miles of slope
and there's no sign of something close for run-off. This leaves runoff
from the immediate area of the monument.
Orion has identified one such possible ditch.
The next stage would be to take a theodolite onto site and start
checking some levels to see whether this ditch has the right slope.