• Speleothems in Miller's Chapel.

    Oregon Caves

    National Monument Oregon

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  • Road Work, Expect Delays

    ODOT will be preparing highway 46 for asphalt patching. Please use caution when traveling between the monument and Grayback Campground. Various work will be from continue until July 31, 2014.

  • Watch for Wildlife

    Please be on the lookout for fawns on the section of Caves Highway around Caves Campground! There is at least one very young one that is using the pavement as his transportation corridor.

Bicycling Information

If you plan on riding your bicycle up to Oregon Caves, please be aware that the last 10 miles are all uphill and that the roads can be narrow. There is no bike lane. Be sure to wear bright clothing and be aware of other traffic on the road. Traffic increases on weekends and during the summer.

You can only ride your bicycle on paved roads and in parking areas on the monument. There are no trails on the monument accessible to bicycles. However, you could connect to US Forest Service roads by way of Hwy 46. Please contact the Forest Service for more information.

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.