Obsidian Flow Trail


This one-mile interpretive trail climbs up and onto an impressive lava flow of obsidian (black glass) and pumice.  This trail is located within the Newberry National Volcanic Monument.

At a Glance

Fees $5/vehicle/day – On site payment not available
Restrictions: Collecting Obsidian or other material from any site on Newberry National Volcanic Monument is PROHIBITED. Penalty: up to $5oo fine or up to six months in proson or both. Horses & mountain bikes prohibited.
Passes: Recreation Passes may be used as a form of fee payment



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Outdoor Learning

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Interpretive Areas

There are seven interpretive signs along the trail. To access this area, take the left fork of the loop trail that is about 1/3 of the way up the trail. The Big Obsidian Flow is 1,300 years old, which makes it the youngest lava flow in Oregon.

Related Information

Areas & Activities


  Area/Length : 
0.5 miles

  Elevation : 
6420 - 6560