Petrified Forest National Park is the only national park in the U.S. with a section of old Route 66. The park is also home to ...

The petrified forest began to form more than 200 million years ago when its trees were washed over and covered with sediment that prevented them from decaying.

This rosy-pink chunk of petrified wood from Utah's Chinle Formation is the oldest-known fire-scarred fossil. SACRAMENTO, Calif. — After serving nearly 30 years as a doorstop for a nuclear ...

This silica, transported by groundwater, infiltrates the wood and eventually replaces the organic material with mineral deposits, forming petrified wood or opal.

The Pacific Northwest has a fascinating landscape, shaped by ages of fire and floods. It’s possible to see this geological history come to life at the Ginkgo Petrified Forest State ...

Every once in a while, those who explore Nevada stumble upon a place that comes as a complete surprise. That’s certainly the case for a place called the Sump, which despite its less-than-enticing name ...

A 160 million-year-old petrified tree on display at the Denver Museum of Nature and Science reveals keys to climate patterns from ancient times.

Hike through Colorado’s petrified forest and learn about its rocky history with highlights from Walt Disney and failed wood saws at Florissant Fossil Beds.

Petrified wood, dating back 210 million years, from Utah's Chinle Formation contains the first fossilized fire scar ever recognized, scientists report.