WORKING GROUP 9 
BRINK 
501 
0-25 Mile 
I 1 1 
0 5 Km 
MEAN ANNUAL RAINFALL ! 
33 INCHES (850 m.m.) 
CLIMATIC N - VALUE = I- 4 
SCALE OF ORIGINAL PHOTOGRAPHY : 
I * 12,000 
EXPLANATION = 
KARROO SHALES (S) INTRUDED BY 
DOLERITE (D) WHICH IS MOSTLY DE 
COMPOSED TO RED RESIDUAL SOIL(R). 
OVERLYING SOILS ARE MAINLY SILTS 
(Si) AND ALLUVIAL WASH (Aw). 
Fig. 3. Stereogram and soil engineering 
sketch map of portion of proposed 
national route, Howick, Natal