Big Obsidian Flow Trailhead and Interpretive Site


At a mere 1300 years old, the Big Obsidian Flow is the youngest lava flow in Oregon.  A one-mile interpretive trail climbs up and onto this impressive lava flow of obsidian (black glass) and pumice.

At a Glance

Fees $5/vehicle/day from May 1 through September 30
Closest Towns: Bend, OR
Water: No
Restroom: Vault Toilet
Passes: Recreation Passes may be used as a form of fee payment

General Information

General Notes:

For more information call Lava Lands Visitor Center:

  • 541-593-2421


From Bend, travel 24 miles south on Hwy 97, then 15 miles east on County Road 21.



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Day Hiking

Along the trail there are seven interpretive signs which discuss the geology, biology, history, and archaeology of the Big Obsidian Flow.

Nature Viewing

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Outdoor Learning

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