Sunday, January 15, 2017

Acton Grid: Fred Martin Video with FFC Stupid Sheet

The internet keeps losing this. One of the best pieces of hypothesis testing for the idea that "marker" piles are connected to astronomy, since it involves two independent pieces of data:
I have a little information to add to this story. The "high point" I am talking about is a flat topped boulder slightly elevated above the rock piles in the grid. The lines in the survey converge on the edge of this rock. It is on the near horizon and so its shadow will fall along the line of rock piles on the winter solstice sunrise (the same line as summer solstice sunset). I believe there is another boulder in the winter solstice sunset direction - hence another shadow source for the sunset of the same day. Now we just need site videography to prove these shadow actually exist.


pwax said...

Did you notice what this says? For example if it is a real grid, it predicts 2 shadow sources. If it is a linear sequence of piles, (somewhat evenly spaced and somewhat vertical sided) then only one shadow source is needed - see for example:

pwax said...

Which also might explain why marker pile sites at the northern foot of Wildcat Hill (Ashland) are radially organized around small knolls: Something at the top of the knoll can be a single shadow source.

Someone from Ashland want to go have look?