[blam]

"Maybe, but I am not buying into asteroid impact for these features. They look just like the ones in Alaska and elsewhere where there is permafrost. I suspect the Carolina Bays were formed during the Ice Age at the edge of the ice sheet by permafrost."

Freeper Renfield (who has studied the bays) agrees with you.

[RightWhale]

I haven't studied the Carolina Bays, but similar-looking features in Alaska are right outside my house and especially at Prudhoe Bay and I have looked a little closer at those and watched them change over the past 30 years. I have one developing right in my yard, and I consider that a fortuitous and happy development. If the Arctic and subarctic warming trend continues, we might find 80% of Alaska will be bays like this.