There are two Megalithic Routes from the Mediterranean
to the Pacific, neither of them Mongoloid
or Negroid

(7) It is no rash conclusion, then, to infer vast migrations of men from the Mediterranean region along the Atlantic coast and across the north of Europe and Asia, and again across the south of Asia, to the Pacific Ocean, ages before the Egyptian or Babylonian civilisation appeared, ages before the metals were dug or hammered or moulded into weapons, ages that may be measured by many thousands of years. Nor is it rash to infer that these migrations were in such dense masses as to be able to drag vast distances and erect these colossal monuments, or at least to be able to subdue slave labour enough to accomplish this. That they were of the Caucasian division of humanity may be taken for granted. Neither the Negroid nor Mongoloid has ever been a sea migrant, whilst their land migrations have never covered great distances, except in the case of the pre-historic Mongoloid entrance into America by Behring Straits and the historic armed Mongoloid invasions of Europe. And then they brought no megalithic habit with them. There are no colossal stone erections either through the centre of Europe, a route the Huns and Magyars took, or north to Behring Straits or southwards thence to Central America. The megalithic peoples clung to the coasts in Europe, and after they had crossed broad continents, when they struck the ocean again, they took to maritime pursuits not only on the northern but on the southern route. From Korea they voyaged all over the Pacific; and from the southern terminus in Indonesia they sailed as far as Madagascar, for in that island we have huge stone monuments to tell of their arrival.