203 
SUMMIT 
or THE 
MOUNTAIN OF ORGANOS, 
t 
AT ACTOPAN._ 
PLATE LXIV. 
The porphyritic mountain of Mamanchota^ 
known at Mexico under the name of los Organos, 
is situate to the north-east of the Indian village 
of Actopan. The spindle-shaped summit of bare 
rock is a hundred metres in height; but the 
absolute elevation of the top of the mountain^ 
from which the Organos rises, is 1385 toises. It 
is on the road from Mexico to the mines of 
Guanaxuato, that the rock of Mamanchota is 
seen at a very great distance detaching itself 
from the horizon ; and, towering amidst a forest 
of oaks it exhibits a very picturesque appear- 
ance. 
^ Essai Polit. sur la Nouvelle-Espagne, tom. 1, p, 289. 
