[KGIII]

Mostly true.

In my area, once you get passed a point south of me, those walls are fewer and fewer. There are areas where it was never farmed and old growth trees still exist.

What is great is you can walk out to places and stand there and be reasonably certain that you're the first human to have ever stood in that spot.

[njarboe]

Possibly, but there has been a lot of humans walking around North America the last 12,000 years or so.

[KGIII]

I'm way up outside Rangeley, Maine. I even have true old growth and there weren't many natives in the area. So, there are some places where it's a good guess. They aren't easy to get to, of course.