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bhikkhu

(10,711 posts)
13. No I didn't - but I see what you mean
Thu Jan 31, 2013, 09:57 PM
Jan 2013

I posted this link: http://www.edinburghgeolsoc.org/edingeologist/z_24_04.html

This is a better link: http://www.world-mysteries.com/sar_12.htm

...which goes on to explain why the ones in Costa Rica are considered distinct from those occuring naturally elsewhere in Mesoamerica. As they all seem to be of similar basalt (essentially volcanic in origin), I think Occam's Razor might be usefully applied...but then again, better minds seem to have reserved judgement.

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