You would be thinking of the Carolina bays. Though many of them are ovals of varying sizes. And of course there's no "consensus" on how they formed...@rc-us wrote: Somewhere in that area is a zone covered full of perfectly-round crater looking forms that reminded me of that area along the U.S. eastern seaboard ... a swampy area I think it was, in North or South Carolina. I forget what the Carolina area was called but there was a thread or a series of posts about it a while back.
Though, as I pointed out earlier, I think I was mistaken insofar as many of the features are protruding rather than recessed. IE, they're hills / mounds rather than troughs / craters.
But I agree that on first blush, they did remind me of crater chains as well. Not so, though. The opposite. Hard to tell from 2D images, sometimes. ;o]
"The purpose of science is to investigate the unexplained, not to explain the uninvestigated." ~Dr. Stephen Rorke
"Common sense is an uncommon virtue" ~Unknown attribution