gorseddphungus, hello, I am completely out of my depth, but along with many others here am following your input here with great interest.
I have recently purchased an antique book, the celtic druids , by godfrey higgins of doncaster, dated 1827.
As can be imagined all he writes is heavily influenced by constant reference to the old testement, but, it is interesting to read his version of the movement of people after , as he describes it ,the great flood.
He starts off by saying that the celtic were the first swarm from the nest
He argues that only those at the mountain tops of Bactriana, the ancient Imaus, or the Himmaleh, would have survived, but as they expanded in numbers they came down and dispersed along the latitude of 45 to 50 degrees, until they reached the Atlantic, these then advanced and colonised Britain, another swarm branched off through Sarinatia, arrived in Euxine, giving it the name Cimmerian Bosphorus, another branched off to Italy and founded the states of Umbrrii, and the Cimmerii at Cuma, near Naples, another swarm advanced into Spain and were called the Celtiberians (celt-Hebrews ), another swarm went south of the caspian sea and populated Phoenecia, another into Arabia felix.
He then goes into great detail , as to the fact that all the land would have been exposed to salt water , and as such would offer no problem to rapid movement, to the swarms and their animals, we easily overlook the fact that the world will have been almost barren for a time in history, and these people will have moved fast, in search of fertile ground.
Apologies, for any mistakes, i was copying from an old book, it is full of fabulous maps of SH, Avebury and many more sites.
I dont know if any of the above will interest you, but what you, Peterh and others have been talking about, I find very interesting and informative, thank you.
Kevin