Bullseyes and Rings

 I saw a couple of ring-inside-ring structures a year or so ago, at Quisset Harbor on Cape Cod (see here), mixed in with some other examples of simpler rings. Here are the photo's I took:

                        

And

                       

Since these are below high tide, I guess they were used when the water was still several feet lower. It gives you a sense of age.

Anyway, I saw another one, not so much a ring in a ring, but you be the judge:

These are all coastal facing, along this eastern edge of Buzzard's Bay.

Just for fun: A friend of mine climbed Mt San Gorgonio in southern California. Which drew my attention to the aerial view of that mountain top. One imagines the "ring of stones" concept was pretty universal:

You could probably write a book about what kind of archeology is found on American mountain tops. Possibly similar things were practiced at the other extreme - at the edge of the sea.