The Crater Lake & Oregon Caves Natural History Association is a non-profit organization dedicated to advancing educational and scientific activities within Oregon Caves National Monument and Crater Lake National Park.
You can become a member of the Association and learn more about the Monument's natural and cultural resources. Yearly memberships can be purchased at the Visitor Center on the Monument. Find out more by visiting www.craterlakeoregon.org.
Did You Know?
The marble rocks of Oregon Caves were once a tropical reef that was pushed under the continental edge to a depth of 12 miles and then uplifted to 4,000 feet above sea level.