Let's imagine an alternate geological scenario in which tierra de fuego and the Antarctica peninsula are connected somehow (an Antarctic peninsula stretching further North, Tierra de Fuego stretching further South, both, a archipelagoes of large islands all close together and easily within reach from one another leading to Antarctica).
How would this effect the migration of Southern American natives? How far South would they go before the climate becomes too difficult? Would we get "Antarctic Natives"? How would this effect the exploration/colonization of both continents when Europeans arrive?
How would this effect the migration of Southern American natives? How far South would they go before the climate becomes too difficult? Would we get "Antarctic Natives"? How would this effect the exploration/colonization of both continents when Europeans arrive?