Calistoga, California -
Petrified Forest

One of the few last roadside attractions; to take a walk in nature instead of wine tasting was a pure joy! Attractions are what you make them. I find myself gravitating toward history/nature. Plenty of picnic benches to grab a bite to go in Calistoga and have a picnic among a historical preserve. Life -- it does not get much better! [Weezer, 03/14/2009]

This place is still around. Not as amazing as you would think, but worth stopping by if you are on a road trip. Not an entire forest, mostly live trees with some petrified trees here and there. [Kerry Laws, 07/26/2007]

Walk through a short trail of petrified redwood trees from a volcanic eruption of Mt. St. Helena three million years ago. Most of the trees were over 2,000 years old when covered by the ash, and are now petrified. The Giant Tree is 60 feet in length, six feet in diameter. There are several large petrified trees that have been excavated. Registered as a California Landmark #915. [Mercy Calman, 08/28/2001]

[RA: Update from Sky - "The site also offers a tiny (free) one-room museum which features samples of rocks and formations, and information about petrified wood and its formation. A respectable-sized gift shop is also offered, where visitors can choose from an assortment of rocks, gems, T-shirts, postcards and other geological memorabilia."]