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?
The Pileated Woodpecker is the largest North American woodpecker. Funny, mischief making cartoon character Woody Woodpecker, was inspired by this bird. Other birds need this species for survival. They will use the holes or cavities the Pileated drills as nests, winter shelter, and a way to get at food inside trees that is otherwise hidden.