Petrified Forest National Park  

Petrified Forest National Park

The burliest lumberjack with the best-oiled chainsaw couldn"t slice the massive "timbers" found in Petrified Forest National Park in northeastern Arizona. So why are these giant stone logs segmented in such symmetrical rounds, as if they"re ready to be split into firewood?

© Ian Shive/Tandem Stills + Motion

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