18 CAVE AND CLIFF DWELLERS. 
entirely too much for him in the resulting 
combat. More worthless or meaner In¬ 
dians were never driven out of a country 
than were the Apaches after they had 
found this region uninhabitable, or at least 
unbearable for their murderous methods 
of life ; and for much of the decisive 
action that led to this desirable end we 
have to thank the Mexicans. 
The way the Las Palomas Mountains 
have of rising sheer out of a level country 
is quite common in this region, plainly 
showing that the mountains once rose 
from a great sea that washed their bases, 
and when it receded with the uplifting of 
this region it left the level plain to show 
where its flat bottom had been ages before. 
A fine example of this is seen in the 
mountains called Tres Hermanas (the 
Three Sisters), very near the boundary 
