U. 8. GEOLOGICAL SURVEY 
A, 
CLIFF DWELLINGS IN WALNUT CANYON, SOUTHEAST OF 
FLAG 
Ruins ¢ 
STAFF, ARIZ. 
»f houses are under overhanging cliff of Kaibab limestone. 
BULLETIN 613 
PLATE XxIx 
B, CROSS-BEDDING IN scene! SANDSTONE IN W 
CANYON, IZ. 
The cross-bedding, which is diagonal to the re gular bedding, was 
strong currents that varied in direction as the y deposited the 
ALNUT 
proc Lys sed by 
san 
