The nomadic people constantly moving south they moved along the unfrozen corridor between the Pacific coast and the Rocky Mountains. Eventually arriving at the Southern most tip of South America in 12000.They were genetically similarity to the people from North East Asia.Their settlements have been found across the Americas.
The ice retreated and for 9000 years until 1519 they were cut off and unknown from the rest of the world. As for the mammoths they were all eaten.
