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.
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.
Discover the Marble Halls of Oregon
Nestled deep inside the Siskiyou Mountains, the caves formed as rainwater from the ancient forest above dissolved the surrounding marble and created one of the world's few marble caves. The highly complex geology found on the Monument contributes to the unusual and rare plants and animals found nowhere else but here. Experience the extensively decorated and adventurous "Marble Halls of Oregon."
Did You Know?
A rough-skinned newt has tetrodotoxin, one of the world’s strongest poisons. A threatened newt exposes its bright red-orange belly, a stop sign that says “eat me and you will be sorry!”