+St.Matthew Posted November 24, 2013 Share Posted November 24, 2013 I read this article this morning. These could be fun EarthCaches if they aren't already! http://www.cracked.com/article_20667_5-mind-blowing-things-you-wont-believe-were-built-by-nature.html Quote Link to comment
+terratin Posted November 24, 2013 Share Posted November 24, 2013 Some cool stuff there! With the last one I thought: those cogs look like crinoids. I'm glad scientists confirmed that they are. Would have been embarrassing if I didn't know my marine fossils Mrs. terratin Quote Link to comment
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