[BatGuano]

I tend to give James Michener’s sources some credit.

Your last paragraph makes no sense.
Read it again and rewrite what you hope to be sense.

Yes, Tierra del Fuego is at the Southern tip of South America.

[SunkenCiv]

Michener was a novelist. My last paragraph made sense, but was quick and dirty, I've added three words, and split it into two paragraphs for you. Humans didn’t move eight miles per generation, they were all the way down to Tierra del Fuego at basically the same time that the oldest cultural remains in Alaska were laid down. The strait wasn’t an impediment to migration (in the right time of the year, of course) and any folklore-driven culture would know the ancestors had crossed over from Asia, or had waved goodbye to the relatives as they migrated to the Americas.

[SunkenCiv]

Okay, this time for sure. :^)

Michener was a novelist. My last paragraph made sense, but was quick and dirty, I've added three words, and split it into two paragraphs for you.

Humans didn’t move eight miles per generation, they were all the way down to Tierra del Fuego at basically the same time that the oldest cultural remains in Alaska were laid down.

The strait wasn’t an impediment to migration (in the right time of the year, of course) and any folklore-driven culture would know the ancestors had crossed over from Asia, or had waved goodbye to the relatives as they migrated to the Americas.