100 GUIDEBOOK OF THE WESTERN UNITED STATES. 
buttresses are carved into a great variety of massive forms. These 
very conspicuous and beautiful features continue in sight for a long 
distance along the north slope of the Zuni uplift. 
The strata appear to be horizontal, but they dip at low angle to 
the northeast or at right angles to the line of the railway. 
Figure 21, a section near the Continental Divide, shows the succes- 
sion of beds on the slopes of the Zuni Mountains south of the railway 
and in the walls of red sandstone and overlying rocks to the north, é 
In the region about Thoreau the principal industry is the raising of 
sheep, goats, and cattle. Many Navajo Indians, engaged mainly in 
goat raising, live in the country to the north. This 
is the place from which the extensive prehistoric ruins 
athe aC naa of Chaco Canyon, 50 miles to the north, are reached. 
Kansas City 1,047mites, One of these ruins, now called Pueblo Bonito, was a 
house of about 1,000 rooms. At Thoreau and for the 
next few miles beyond there are especially fine views of the great cliffs 
of red Wingate sandstone to the north. 
Thoreau. 
4 
Dakota sandstones 
ore SNale £4 
Limestone Zuni sandstone 
and sandstone- 
aK 
Moencopie shale 
Zh (and sandstone 
Limestone\. 
- Wingate |-:- 
Shinarump Wel eercince 
{conglomerate? : tes 
<< SSS RR Re 
SSNs = 
SS ee 
Vertical scale 
bie oe wg ora $000 Feet 
Figure 21.—Section from the Zuni Moun 
‘N 
tains northward across the Santa Fe Railway near Thoreau, 
. Mex., looking northwest. 
The climb up to the Continental Divide is made on a very moderate 
grade, about 21 feet to the mile. There is no mountain top to be 
a attained, for the divide is in a broad east-west depres- 
i on known as Campbells Pass. The summit, which 
KansasCity 1,051 miles,J3 Teached at Gonzales siding, halfway between mile- 
posts 130 and 131, is at an altitude of 7,250 feet, or 
358 feet lower than Raton Pass. A large sign erected just north of 
the track states that the Continental Divide is crossed at this place. 
This divide, which crosses the Zuni Mountains to the south and passes 
over the high cliffs to the north, separates the waters of San Jose 
River and the Rio Puerco, affluents of the Rio Grande, from those of 
the Rio Puerco (of the West), a branch of the Little Colorado, which 
flows into the and so empties into the Pacific Ocean. 
| West of Gonzales there are two lines as far as Perea; the west- 
bound trains take the left-hand track and pass through South Guam 
sidin : halfway between mileposts 136 and 137. In this vicinity the 
oe great red wall to the north is & prominent feature, and to the south 
= rise the long slopes of sandstone and limestone leading up to the 
