Oregon Caves National Monument

Oregon Caves National Monument Review

Marble caves, large calcite formations, and huge underground rooms shape this rare adventure in geology. Above ground, the surrounding valley holds an old-growth forest with some of the state's largest trees. Guided cave tours take place on the hour in late spring and fall, and every half hour in July and August. The 90-minute 0.6-mi tour is moderately strenuous with low passageways, twisting turns, and more than 500 stairs; children must be at least 42 inches tall to go on the tour. Cave tours aren't given in winter; however, unless the road is closed temporarily due to snow, the monument itself is open year-round.