• Speleothems in Miller's Chapel.

    Oregon Caves

    National Monument Oregon

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  • Cave Tours Closed for Season

    Cave Tours are closed for the winter. Tours will resume April 26, 2014. All trails on the monument remain open.

  • Road Work

    Crews are removing brush along highway 46 beginning in the lower parking lot and moving down the highway. Work is scheduled to last until April 20, 2014; expect delays.

Park Statistics

Visitation at Oregon Caves, 2001-2010

Annual Monument Visitation

Year Visitors

2010 83,132

2009 83,208

2008 73,774

2007 76,966

2006 78,900

2005 83,811

2004 83,701

2003 94,745

2002 84,520

2001 87,175

For more complete statistics, visit www.2nature.nps.gov.stats.

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.