364 CAVE AND CLIFF DWELLERS. 
us on our third day. Although we had 
been passing through picturesque valleys 
and were constantly crossing lovely 
mountain brooks, one must admit without 
hesitation that of the many hundreds of 
beautiful streams in the Sierra Madre 
Mountains, flanked by cut and carved 
stone, there is none that will compare in 
extent or beauty with the sculptured rock 
of the Arroyo de las Iglesias (the Canon 
of the Churches), so named on account of 
the spires of rock that greet one on every 
side for the greater part of a day’s travel. 
For eighteen or twenty miles the Canon 
of the Churches seems more like some 
theatrical representation of a fairy scene 
than a real one from nature. The lime¬ 
stone has been eroded into a thousand 
fantastic forms by the action of the 
elements, the predominating one being 
