Mark Van Alstyne wrote:The Sage Wall in Montana is an incredible mystery—natural or man-made? A simple, non-invasive paleomagnetic test could reveal the answer. By analyzing the magnetic orientation in its granite blocks, scientists can determine if they cooled in place (natural) or were moved and placed (human-made). If the magnetic signatures vary, it suggests human construction; if they align consistently, it points to natural formation. This test could finally solve the debate with real, scientific evidence
That the owners haven't reached out to any of the geology departments at surrounding universities (Butte, Bozeman, Missoula) suggests to me that someone is hoping to capitalize on the mystery and the recent surge of interest in megalithic construction. Mark's suggestion above is a level of analysis that even an undergrad could easily do as a low-credit independent study or summer project. Almost no effort required to settle this question conclusively. I'd be shocked if they haven't had offers already, as it would make a fantastic undergrad thesis.
Have a geology degree, used in the field all over the world. Education and experience can admittedly lead to developing overconfidence in our ability to "judge by feel" at a glance within our area of expertise. But it looks like natural joint sets to my eye, especially considering the prevalence of similar clearly-natural structures all over that area. But it bears such uncanny resemblance to other megalithic structures that it sure is intriguing.
Hope the owners will arrange for the academic work, but not holding my breath. Sometimes mystery is more interesting than knowledge.