TO EL PASO. 133 
_ rocks rose perpendicular like walls. From the top 
and in the crevices of these, grew a variety of shrubs. 
A low range of rounded gravelly hills, covered with 
_ grass, but destitute of trees, bordered the defile; while 
about half a mile or less beyond, loomed up the great 
mountain, its almost perpendicular sides showing a 
dark brown granite from the base to its very summit. 
except from the plain above. As we emerged from 
the narrow gorge, the same terraced and castellated 
rocks which we noticed at Castle Mountain appeared 
again, but in more strange and picturesque forms-—now 
three miles across, surrounded by hills and mountains, ex- 
_ ceptonthenorth. Passing them, we reached the Hueco 
_ Tanks, and stopped beneath a huge overhanging rock. 
_ The mountains in which these so-called “ Tanks” 
_ are found, are two rocky piles of a similar character to 
_ the Cornudos del Alamo before described. The rocks, 
however, are thrown together in still wilder confusion, 
and are of more irregular forms. One mass extends 
_ about a mile along the amphitheatre above mentioned, 
_ and is about half a mile in breadth. The other, situated 
tothe south, is separated by a narrow pass from that 
described. It, too, extends about a mile from north to ~ 
south; but in other respects is very irregular, consisting 
of several vast heaps, quite disconnected. Much of 
this is granite in place, while gigantic boulders are 
_ piled up like pebble stones at its sides and on its sum- 
mit. These piles are from one hundred too one pone 
— and lity feet in height. : 
