"Robber's Rock."

Historical marker location:

Keno, Oregon

( Marker is on Topsy Grade Road, on the right when traveling north.)

Marker installed: 1992

Crater Lake, located in southern Oregon, is the deepest lake in the United States and one of the deepest in the world. It was formed over 7,000 years ago when Mount Mazama erupted and collapsed, creating a caldera that filled with water.