The Big Obsidian Flow is located in the Newberry National Volcanic Monument which is in La Pine, Oregon.
The Big Obsidian flow is a one mile interpretive trail that takes you through obsidian (black glass) and pumice. There are 7 signs along the way and great views of Paulina Lake. It’s also worth mentioning that this is a great area for bird watching!
From the parking area follow the paved path that leads you to a stairway. The stairs take you up to the flow where you wind through obsidian and pumice for a mile. There are many benches and viewpoints along the way.
Distance: 1 mile (easy)
Elevation: 125 feet (easy)
Pet Friendly: No, the obsidian can easily cut dogs paws.
Goo For: All ages
Parking Fee: There are fees to enter the monument and some additional parking fees.
Seasons: Spring through fall.