Ginkgo Petrified Forest State Park is .7 mi. n. of I-90 exit 136 on Vantage Hwy., then .5 mi. e. on Ginkgo Ave. The park includes 7,500 acres of fossilized ginkgo trees dating back some 10-17 million years. Unlike most other petrified forests, the trees were entombed in lava. The museum in the interpretive center contains exhibits.
Three miles of hiking trails and a .75-mile interpretive trail are 2 miles from the interpretive center; another trail leads from the interpretive center to rocks with petroglyphs.
Picnicking is permitted. Time: Allow 1 hour minimum.