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Worth1 · June 29, 2018

Saw a rock in the picture that reminded me of this.

https://en.wikipedia.org/wiki/Lichenometry

June 29, 2018	#22
Worth1 Tomatovillian™ Join Date: Feb 2006 Location: Den of Drunken Fools Posts: 38,539	Saw a rock in the picture that reminded me of this. https://en.wikipedia.org/wiki/Lichenometry