These petrified logs, once towering trees, have been transformed through a slow, fascinating process that replaced organic ...

The outcome? Petrified wood, retaining the plant’s cellular structure but appearing rock-like. If you’re a collector of National Parks or are on an Arizona road trip, then Petrified Forest National ...

While most come to see one of the world's largest concentrations of brilliantly colored petrified wood, many leave having glimpsed something more. The current 346 square miles of Petrified Forest ...