Historical Marker
Corkscrew Grade
Historical marker location:
Challis, Idaho
( Marker is on Custer Motorway Adventure Road (Forest Road 070) near Forest Road 256A, on the right when traveling west.)
Idaho was the first state to have a complete statewide system of television broadcasting. KIDO-TV, now KTVB, began broadcasting in Boise in 1953, and within a few years, the entire state was covered by a network of television stations.