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The Big Obsidian Flow is a patch of black and grey volcanic glass covering about 4 square miles of the Newberry Crater floor .
When the volcano erupted 1300 years ago, the rocks it produced were volcanic silica and obsidian. Both of these rock components are very sharp and are used for making glass, weapons and other instruments.
Large boulders of obsidian |
A view of the path we hiked. |
Obsidian and Silica Rock |
Here we are sitting at the top of the world.
We had planned to drive to the top of Paulina Peak. The road still had 3' snow. |
After our big hike, we had lunch at East Lake. |
The birds watched and waited for us to share lunch. |
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