U, S. GEOLOGICAL SURVEY BULLETIN 611 PLATE XxI 
CABINET GORGE, IDAHO, 
Clark Fork here passes through a chasm whi t has cut in red shale and sandstone (Striped Peak formation). The gorge at its narrowest part is about 100 feet wide. Rocks 
dip gently to the right. Photograph copyrighted by Haynes, St. Paul, Minn, 
