[RightWhale]

few people do

We New Englanders are very inquisitive. We notice a lot of things, even if we don't talk much.

[Destro]

Well evidence of earthworks proabably go unnoticed all over the world.

[Destro]

PS: I am not saying I acceptthe claims of the Canadian in question - just pointing out that it is plausable to miss earthworks right in front of you (evidence of firepits, etc)

[Destro]

PPS: At tHomas Jefferson's Monticello archeological evidence of slave cabins and sheds is found by locating outlines in the dirt where the color of the dirt is of a different color than the the other dirt.

There need not be monuments for such evidence.

[SunkenCiv]

Mystery Hill, which is a megalithic site, yielded radiocarbon dates from centuries BC. Despite that (and the fact that it obviously wasn't built for any old Yankee purpose, sprawling all over the hilltop as it does) one still hears talk about how it was built as a root cellar, or a foundation for some house, for an 18th c family known to have lived at the site.