Petrified Forest in California State

Petrified Forest

This 845-acre property in Sonoma County is home to the largest petrified forest in the world.

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Petrified Forest Details

This 845-acre property in Sonoma County is home to the largest petrified forest in the world. It was created 3.4 million years ago when Mount St. Helens erupted, burying the trees in a thick layer of volcanic ash. Over the next thousands of years, the ash penetrated the trees, destroying the bacteria that causes decomposition and creating a fossil-like structure from their trunks. The forest was buried for millions of years until it was discovered by a farmer in 1870. Now, guests can see these prehistoric trees, including the Pit Tree, the Giant, and the 8-foot wide Queen.

Difficulty

Low

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Nearby Parks Around Petrified Forest

Compare nearby parks around Petrified Forest when deciding whether to expand the route after this stop.

142.8 mi away

Lassen Volcanic

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164.1 mi away

Pinnacles

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175.0 mi away

Yosemite

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203.8 mi away

Redwood

National Park · CA

301.1 mi away

Crater Lake

National Park · OR

347.8 mi away

Death Valley

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Nearby Points of Interest Around Petrified Forest

Use nearby POIs to quickly expand your options beyond Petrified Forest while the map context is still fresh.

4.0 mi away

Napa Valley Vine Trail

When completed, this scenic bike trail will be 47 miles long and travel through Napas world-famous vineyards.

5.1 mi away

Bothe-Napa Valley State Park

You would never believe this beautiful park is located in the middle of California wine country.

6.7 mi away

Robert Louis Stevenson State Park

In between wine tastings, it is worth stopping by this state park in between Sonoma and Napa County.

7.1 mi away

Bale Grist Mill State Historic Park

Located between Calistoga and St. Helena, this 5-acre park is famous for its water-powered corn and wheat grain mill.

9.0 mi away

Trione-Annadel State Park

The best time to visit this state park is during early spring until summer when the open meadows and fields are filled with budding wildflowers.