HIGH PENEPLAIN 
I 2 5 
mined by some 
cause other than 
the rock struc¬ 
ture. As their 
direction coin¬ 
cides with that 
of the local in¬ 
clination of the 
old peneplain, it 
is highly proba¬ 
ble that they 
were super¬ 
posed on the 
rock structure at 
the time of the 
uplifting of the 
plateau. The 
great valley 
holding Brady 
Glacier and Tay¬ 
lor Bay, on the 
other hand, runs 
parallel to the 
strike o f rocks 
exposed in the 
hills, and may 
fairly be as¬ 
sumed to occupy 
the outcrop of a 
belt of compara- 
tively weak 
rocks. 
If now we 
project the sum¬ 
mit plane of the 
