fifteen-room cliff dwelling and a large grass and mud 
granary shaped like a water Jar or o//a (Plate XX XVIII). 
Trenches were dug beneath the floors and walls of the 
house and in a corridor-like extension of the cave behind 
the structures. Below the house, 18 inches of dirt con- 
taining cultural objects were revealed before the floor 
was reached. In the rear only the first three levels (18 
inches) of a test trench produced refuse and artifacts; 
however, two human burials were encountered in pits 
which had been dug to lower depths. Potsherds and 
maize were present throughout the deposits. 
Dark Cave. The fifth cave which yielded the maize 
discussed in this report, Dark Cave, is located in Sonora 
approximately 35 airline miles northwest of Cave Valley 
in a narrow canyon which is known as Arroyo el Concho. 
This area does not appear to have been as favorable to 
occupancy by manas was Cave Valley and fewer archaeo- 
logical sites are located there. A number of caves suit- 
able for occupation exist high on the steep cliffs of the 
eanyon, but the only lands available for cultivation in 
the area are on precipitous mountain slopes or in narrow 
arroyos. That these areas were utilized for agricultural 
purposes is suggested by the presence of numerous rock 
walls. The canyon was dry at the time of our visit; how- 
ever, it was obvious that considerable water flows through 
it at times. A deep stream bed had been cut in the can- 
yon bottom and boulders and rock outcrops have been 
eroded by running water. 
Dark Cave is one of four caves located about 200 feet 
up the side of the canyon at the top of a talus slope. It 
has two chambers each approximately 30 feet in diameter 
situated one behind the other. <A cliff dwelling compris- 
ing eight rooms in the outer chamber and four rooms in 
the dark inner chamber had been constructed in the cave. 
[ 156 | 
