Arizona's Petrified Forest is not a forest at all. It is a hauntingly beautiful landscape filled with magnificent specimens of petrified wood. Petrified wood is wood that has turned into stone. How did this happen? Millions of years ago, the forests covering Northern Arizona were buried under a sea of mud, sand, and volcanic ash, and the pressure over a period of time turned the wood into stone, to create a forest of stone trees!
Image - http://www.moore-fun.net/images/Petrified%20Forest.jpg
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