[Windflier]

There are three stone fragments just above and to the left of the rock circle that are much more interesting, in my view.

Two of them appear to be smoothly cut and polished in a gentle curving pattern, while the third appears to be a square block embedded in the dirt.

[Vlad The Inhaler]

the third appears to be a square block embedded in the dirt.

Probably a large iron pyrite crystal (fools gold) tossed aside by the freebooting gold prospectors who dug the nearby circular mine pit.