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Oregon Caves National Monument a child's drawing
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Oregon Caves National Monument
Geologic Activity
Learn more about the region's geologic activity.

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Waterfall and pool near the entrance to Oregon Caves.

Did You Know?
The stream that comes out of the entrance of the cave is a tributary to a watershed that empties into the Pacific Ocean. There are no human-made obstructions that would prevent salmon migration, which makes this the only cave in the National Park Service with an unobstructed link to the ocean.
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Last Updated: September 03, 2006 at 18:32 MST