Petroform:
A shape or pattern made by arranging large rocks and boulders over a relatively wide area. [Wiktionary]
Noted in “Letter from Georgia: Soaring With Stone Eagles,” Eric A. Powell, Archaeology (July/August 2022):
“I wasn’t sure what to expect,” says [Johannes Loubser of the archaeology firm Stratum Unlimited]. He notes that piled-stone features, also known as petroforms, have often been a source of controversy among archaeologists who study the southeastern United States, many of whom assume they were left by European-American farmers clearing their fields of stones. But, like [Jackson County deputy sheriff Kevin Thomas], Loubser’s first thought on visiting the site was that it was unusual and that at least the largest stone mound had very likely been made by Native Americans, not by farmers removing stones before plowing.
