Thread: What is that?
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Old 09-16-2012, 10:29 AM   #11
NN5I
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Quote:
Originally Posted by TXiceman View Post
Atolls are formed by undersea volcanos

Ken
True, sort of -- corals have a bit to do with it too, usually -- but atolls are not themselves underseas. If it doesn't stick up above the sea, it isn't an atoll.

I was wrong, too, to call it a caldera. I've since learned that not every volcanic crater is a caldera. This, I think, is a crater that's not a caldera.
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