Here is one, from the front and back:
Here is another from the front, back, and side:
That is certainly not random discards.
Here is another, beyond the wall:
As I say, they are a bit unusual. I would love for other eyes take have a look.
This is about rock piles and stone mound sites in New England. A balance is needed between keeping them secret and making them public. Also arrowheads, stone tools and other surface archaeology.