Very interesting but it didn't really put the finger on where the stones had come from.

What interested me was the fact that there had been no trace of human transportation of any stones to the mid south eastern region. To quote Kammer - "Surely the prehistoric Londoners had a similar religion to their neighbours in Wessex (the Medway monuments point to this)."

The site you mentioned was coastal based and relied upon the glacial theories as no human involvement had been found.

I should chuck in the fact that they may have had sites on soft cliff edges and these had collapsed into the sea due to erosion. That would be a whole new journey to take.