Ginkgo Petrified Forest / Wanapum Recreational Area

 Ginkgo Petrified Forest State Park is a 7,470-acre park with camping at Wanapum Recreational Area. The park features 27,000-feet of freshwater shoreline on the Wanapum Reservoir along the Columbia River. Petrified wood was discovered in the region in the early 1930s, which led to creation of the park as a national historic preserve. Ginkgo Petrified Forest is a registered national natural landmark. It is regarded as one of the most unusual fossil forests in the world.
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Discover Pass: A Discover Pass is required for vehicle access to state parks for day use. For more information about the Discover Pass and exemptions, please visit the Discover Pass web page.

  1. Activities
  2. Boating
  3. Camping
  4. History
  5. Maps

ADA Amenities/Facilities

  • Campground (Wanapum Recreation Area)
  • Restroom (Ginkgo Petrified Forest)
  • Hiking trail (Ginkgo Petrified Forest)

Picnic & Day-Use Facilities

There are 57 unsheltered picnic tables, available first come, first served. The park is heavily used during Gorge concert season, and fills early on weekends.

Gingko Petrified Forest State Park day-use area (picnic area and trails) and Wanapum Recreation Area boat launch open daily:
April 1-Sept. 30, 6:30 dusk 
Oct. 1 - March 31, 8 a.m. to dusk 

Wanapum Recreation Area day use (picnic area, swim beach) open daily:
April 1-Sept. 30, 6:30 dusk 
Oct. 1 - 31, 8 a.m. to dusk 
Nov. 1-Feb. 28, closed



  • 3 miles of hiking trails

Water Activities & Features

  • Boating
  • Boat ramp
  • Freshwater fishing
  • Personal watercraft
  • Swimming
  • Water skiing

Other Activities & Features

  • Bird watching
  • Interpretive activities
  • Museum
  • Wildlife viewing

Interpretive Opportunities

The Ginkgo Petrified Forest Interpretive Center offers spectacular views of the Columbia River, Sentinel Gap and surrounding Ice Age flood-carved basalt landscape. Indoor exhibits tell the geologic story of the Vantage Petrified Forest and display one of the most diverse petrified wood collections in North America. Admission is free. Donations are gratefully accepted. 

Interpretive Center Hours:
April 1- May 15                        Friday, Saturdays and Sundays  11:00 a.m. to 6:00 p.m
May 16- September 15            Open Daily                                  11:00 a.m. to 6:00 p.m.
September 16 - October 31     Friday, Saturdays and Sundays  11:00 a.m. to 6:00 p.m.
November 1 - March 31           By appointment only   

The Trees of Stone Interpretive Trailhead, located two miles west of the interpretive center, guides you through an ancient fossil bed with nearly two-dozen petrified logs exposed along this one-mile loop trail. Along the trail you also will find ice-rafted erratic rocks remaining from Ice Age floodwaters thousands of years ago.

The Cove Recreation Area, located one-and-a-half miles south of the Wanapum campground, offers a half-mile, self-guided interpretive trail along Johnston Creek.
Check Grant County PUD website in regards to park hours and programs.
For more information regarding tours and programs, call Olmstead Place State Park at 509-925-1943. 

Additional Information

  • A recreational license is required for fishing and shellfish harvesting at Washington state parks. For regulations, fishing season information, or to purchase a recreational license, visit the Washington Department of Fish and Wildlife.