A PUSH AND A PINCH, 
251 
and a slight push is all that is needed to liberate the 
boulderstone. We push, and down, down the steep 
mountain side the enor¬ 
mous mass literally 
thunders as it crashes 
along. The echo from 
all sides raised by its 
frightful noise rever¬ 
berates through the 
mountain. We stand 
for a single moment 
and gaze in wonder at 
the falling mass, but 
the vibration caused 
by our imprudent act 
might have proved a 
serious difficulty for 
us. Above us, on all 
sides, the rough pro¬ 
jecting masses of rock 
begin to descend in 
turn, and as they come 
rattling down we fear 
their accelerated speed 
will soon sweep us away with the avalanche of stones 
now set rolling. 
