Driving east out of Mammoth Hot Springs takes you from Mammoth
Country to Roosevelt Country. The sign, above, explains this 20
foot high phenomenon. There is a large group of petrified trees
farther east on the Northeast Entrance Road. I didn't see a road
or trail to them. The middle photo is not a petrified forest. It's
the result of the 1988 fire on the opposite hill. Digital raw images.