It looks like something from a science-fiction movie, but it isn’t. (CHT Lew Rockwell.)
Addendum:
The above link no longer goes to the same pic, but here’s the original.
"Austro" as in Rothbard and Wittgenstein, "Athenian" as in Aristotle and smashing-the-plutocracy.
About Roderick T. Long
The Empirical Me
I’m Roderick T. Long, Professor of Philosophy at Auburn University. I’m an Aristotelean/Wittgensteinian in philosophy and a left-libertarian market anarchist in social theory. (More about me here.) This blog, Austro-Athenian Empire, is a continuation of my earlier blog, archived here.
I’d like a plausible explanation for why this sinkhole appears to be close to perfectly round.
Probably the best explain for why it appears to be close to perfectly round is that it is close to perfectly round.
But as for why it is close to perfectly round, there I’ve got no clue.
http://www.csmonitor.com/World/Americas/2010/0601/Guatemala-City-sinkhole-so-big-so-round-it-doesn-t-seem-real
http://www.vanityfair.com/online/daily/2010/06/what-caused-the-guatemala-sinkhole-and-why-is-it-so-round.html
Hopefully that post with the links will get approved sooner or later.