Do Venus pools contain fresh water or salt water? If they contain fresh water they would be useful for long distance seafarers. Perhaps they were built as 'watering holes'?
It has been known for a long time that fresh water can actually be found in the oceans.
http://www.4information.com/trivia/caus ... ngs-ocean/Apart from that it has recently been discovered that there is an enormous amount of fresh water beneath the sea bed in several areas across the world.
http://www.sciencedaily.com/releases/20 ... 085304.htmGetting back to megaliths and those who built them here is a very interesting talk on youtube by an American, Jim Vieira who describes himself as a 'stonemason and researcher'.
Much of what he talks about is based on his own findings as well as work done by others, particularly in the past few hundred years. A lot of it is documented in contemporary reports.
He covers the huge megalithic mounds found in various parts of the United States as well as underground chambers aligned to the solstices. As a stonemason he is able to discuss the stonework with a professional eye, something refreshing when usually we rely on professional academics. What is surprising is that many of these structures are similar to those found in Britain in their corbelled construction. He mentions this but accepts that it could just be people finding solutions to similar constructional problems.
He also talks about prehistoric copper mines in north America and copper artifacts that have been discovered. In addition to copper there are also objects made of iron, something apparently that the 'native' Americans were not supposed to have used.
He then goes on to discuss, with photographic evidence and nineteenth century newspaper articles, doctors' reports and museum reports, the finding of skeletons measuring eight foot and beyond. Many of the skulls apparently having double rows of teeth.
He is very down to earth in his attitude and does not seem to be part of the 'fanciful' school of ancient aliens and the like. He does point out though that all of the discoveries had been taken over by the Smithsonian Institute which over the years has issued statements that the skeletons had all disappeared or had been stolen at various times.
http://www.youtube.com/watch?v=9-4sI34aIZ0