• Speleothems in Miller's Chapel.

    Oregon Caves

    National Monument Oregon

There are park alerts in effect.
hide Alerts »
  • Haunted Candlelight Tours

    Haunted Candlelight Tours Offered Sunday, October 26 through Friday, October 31, 2014. The tour begins at 4pm and are first come first serve. The tour is limited to 12 people per group. Last regular cave tour will be at 3pm.

Mammals

Inside the Cave

At least eight of the fifteen bat species found in Oregon occur within the boundaries of Oregon Caves National Monument. Most bats seen by the main trail are Townsend big-eared bats, Yuma bats, long-eared myotis bats, silvered-haired bat, big brown bat, Western small-footed bat, California myotis, little brown myotis, and fringed myotis.

Outside the Cave

Squirrels, chipmunks, and fox are quite common. Black bears, cougars, and Mountain beaver are a bit more secretive.

Did You Know?

Acid dew dissolves the cave wall to make small pock marks.

Carbon dioxide mixes with water that condenses on the wall of the cave to create a very weak acid. Over long periods of time this "acid dew" eats away at the marble walls of Oregon Caves making the cave larger.