Neanderthal theory of Indoeuropeans - стр. 4
This migration could also reach America. Archeology of Native Americans show wonderful things. There existed a widespread cultures which created large earth structures.
1840s map of Mound City. Hopewell culture.
Similar structures were found in Britain, South Ural and they may be predecessors of Scythian curgans and early Egyptian pyramids built from earth and mud bricks. Also America knows numerous reports of giant human skeletons circa 2.5 m tall.
Gigantism is a well known feature of animals living in cold climate. A large body has a less ratio of the surface to the volume which helps to economize heat production. Indian legends tell that these people were brutal and had conflicts with humans. Possibly, tried to subdue them. Burials show that they may be chiefs upon humans.
Scheme of Indo-European migrations from c. 4000 to 1000 BCE according to the Kurgan hypothesis. The assumed Urheimat (Samara culture, Sredny Stog culture) and the subsequent Yamnaya culture. The central purple area is supposed to show early Yamna culture (4000–3500 BC); the dark red area could show expansion to about 2500 BC, and the lighter red area expansion to about 1000 BC.
Marija Gimbutas placed the origin of Indoeuropeans somewhere between Upper Don and Volga 5000 years BCE. This approximately corresponds to the date of World Creation in Slavic calendar – approximately 5500 BCE. In this chronology, the event is not mystical at all. Just concluding a peace treaty in a great war. In this language, the word for peace and world is the same. Slavo-Aryans defeated Ahriman. In Shahnameh this may correspond to the end of Irano-Turanian war.
Meanwhile this time scale keeps yet another 2 dates. Both are linked to climate change. 110000 BCE Slavs moved from the North because of the Great Flood. 11000 BCE they recorded the great cold. Indeed, 110000 BP began the last glacial period in East Europe. According to data about the level of the Caspian Sea, 10000 BCE ended the last glaciation. This points at yet another factor which pushed Neandertahls from their homeland Europe. During interglacial periods large areas of the continent became flooded. Accordingly, the population moved towards its mountainous marginal regions. As a result, the distribution strikingly similar to the present was created. In the near past, centres of large empires were located not in the centres of some regions, but at their borders (Britain, Japan, even in Russia Peter I moved the capital from Moscow to St. Petersburg).
It is necessary to take into account that geography of Siberia was different millennia ago. During the last glacial period, Ob and Yenisei rivers which flow at the West and East sides of West Siberia were dammed at the mouth by the glacier. As a result the huge inner sea larger than Caspian Sea existed.