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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 which is located within the Newberry National Volcanic Monument. The Newberry Crater Trail also passes through this site, which connects to the Lost Lake Trail.

This is also the location of the Big Obsidian Flow Amphitheater where ranger talks are featured throughout the summer. A current schedule of these lectures can be found at the Paulina Visitor Center

The site also features several picnic tables and a toilet.

Recreation Fee Site: A recreation pass is required. The recreation fee is $5 per vehicle per day or may be covered by the Northwest Forest Pass (annual and day pass). This location is operated by concessionaire.

General Information

For more information call Lava Lands Visitor Center:

  • 541-593-2421

June - Late Fall

Day use only; no overnight camping allowed

Recreation Fee Site: A recreation pass is required. The recreation fee is $5 per vehicle per day or may be covered by the Northwest Forest Pass (annual and day pass). 

Acceptable passes include:

Passes can be purchased at a local Forest Service office or through a vendor.

This location is operated by concessionaire.

Day Use:
$5 per vehicle per day
$25 per commercial vehicle per day (15 or less passengers),
$50 per commercial vehicle per day (25 passengers),
$100 per commercial vehicle per day (25+ passengers).
$30 per annual

Recreation Fee Site: A recreation pass is required. The recreation fee is $5 per vehicle per day or may be covered by the Northwest Forest Pass (annual and day pass). This location is operated by concessionaire. 

Deschutes Supervisor's and Bend Fort-Rock Ranger District Office

Address: 63095 Deschutes Market Road Bend, OR 97701
Phone: (541) 383-5300
Hours: Monday-Friday, 8:00 a.m. - 4:30 p.m. (Closed on federal holidays)

Getting There

Latitude / Longitude

Latitude: 43.70643333

Longitude: -121.2360306

Directions

From Bend, OR: Travel 24 miles south on Highway 97, then 15 miles east on County Road 21.

Facility and Amenity Information

Restrooms

Restrooms are available at this site.

Recreation Opportunities

Last updated July 22nd, 2025