Mind Blowing Things Built by Nature

[+St.Matthew 1]

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

[+terratin 141]

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