Long Valley Ambush

Historical marker location:

500 North Main Street, Cascade, Idaho

( Marker is at the intersection of State Highway 55 at milepost 115 and Old State Highway, on the left when traveling south on State Highway 55.)

Idaho played a key role in the development of atomic energy. During World War II, the federal government established the Idaho National Laboratory in eastern Idaho, which was used to research and develop nuclear technology. Today, the lab is one of the leading research facilities in the world for nuclear energy and other forms of advanced technology.