Comment by Antipode
A lot of the pictures used in articles for this are pictures of something else (possible an old ship). Here's what it actually looks like: https://holleyarchaeology.com/index.php/the-truth-about-the-...
Calling it Stonehenge-like is a real stretch.
That's a better source than what I found;
> The site in Grand Traverse Bay is best described as a long line of stones which is over a mile in length.
> [...] may be a prehistoric drive line for herding caribou
Also speculation that the Sage Wall in Montana is simply a geologic formation.