Below are links, from Rob Buchanan, to articles regarding:
1) An apparent mastodon petroglyph on boulder submerged under the waters of Lake Michigan. This is the same site described in my "Lithic World 2" e-mail.
http://www.nowpublic.com/culture/u-s-archeologists-find-possible-mastodon-carving-lake-michigan-rock
2) A stone circle on Beaver Island, Michigan.
http://www.beaverisland.net/Projects/The_Stone_Circle/the_stone_circle.htm
3) Research of an ancient site near Las Vegas using ground penetrating radar.
"Remote sensing techniques such as ground-penetrating radar (GPR), magnetometry and electric resistivity use non-destructive energy waves to locate subterranean archaeological remnants. The process began with laying out a grid system on the ground's surface to map out their subsurface findings obtained with the remote sensing technologies."
http://www.earthtimes.org/articles/show/technology-reveals-significant-archaeological-discovery-at-the-springs-preserve%2C675078.shtml
4) The world's most interesting ancient astronomical observatories.
One of the authors is Dr. John Carlson who was a featured speaker at NEARA's Fall 2007 Meeting. One of the sites is the Big Horn Medicine Wheel in Wyoming,
http://www.newscientist.com/gallery/dn16422-best-ancient-observatories
5) A Google book extract from "The Original Vermonters". This extract contains not only a reference to Enosburg Falls but a statement that human remains radio carbon dated to approx. 10,580 bc have been found in Dutchess Quarry Cave near Goshen, NY (pp 18 - 19).
http://www.google.com/books?id=SRiFrTZCGvQC&pg=PA58&dq=hudson+valley++radiocarbon+dating#PPP1,M1
6) The Wikipedia cite to the Dutchess Quarry Cave. Field trip anyone?
http://en.wikipedia.org/wiki/Dutchess_Quarry_Cave_Site
7) Although the following have been circulated recently, here are two YouTube videos about Native American Stone Structures
http://www.youtube.com/watch?v=1Ds6uS-t_Wg&feature=related
http://www.youtube.com/watch?v=ExKcC4G--QE&feature=related
Keep on freein' up the rock world...
Rob