370 
SYMPOSIUM PHOTO INTERPRETATION, DELFT 1962 
Fig. 4. Crevassed area near the Banzare Coast and Paulding Bay, 66°28' S., and 124°00' E., 
taken at 10,000 feet (U.S. Navy photo TF 68) 
Commonwealth Range Alice Glacier Queen Alexandra Range 
f I Beardmore Glacier <—>- f 
Left Vertical Right 
Fig. 5. Mosaic of a trimetrogon set of three photographs 
shows a trimetrogon mosaic made from one vertical and two oblique photo 
graphs taken simultaneously. In selected areas base maps at 1 : 50,000 or 
1 : 100,000 scale are being constructed from these photographs. Both photo 
graphs and map compilations (fig. 6) are used in the field for identifying