Reddit reviews Uriel's Machine: Uncovering the Secrets of Stonehenge, Noah's Flood and the Dawn of Civilization
We found 1 Reddit comments about Uriel's Machine: Uncovering the Secrets of Stonehenge, Noah's Flood and the Dawn of Civilization. Here are the top ones, ranked by their Reddit score.
Excellent question! I suggest reading "Uriel's Machine" http://www.amazon.com/Uriels-Machine-Uncovering-Stonehenge-Civilization/dp/B005ZO67KS/ref=sr_1_1?ie=UTF8&qid=1373897709&sr=8-1&keywords=uriel%27s+machine
It gives an excellent example of how to make your own henge-type calendar & why this was so important to agriculture throughout Europe.