[colorado tanker]

There are several trenches with an "Altar" with what looks like blood grooves.

That doesn't sound Native American, at least not U.S. What a shame P.C. crap keeps us from doing good archeology right here at home.

[Little Bill]

One of the problems is that this area has been farmed for all most 400 years. I would not be surprised that early farmers found many things that we would value today and built a wall with it.

I think that the whole area from the Sacco River to the Merrimack needs to be surveyed could be interesting.