86 
GUIDEBOOK OF THE WESTERN UNITED STATES. 
At Greycliff an upland stretching far to the north is visible across 
the river on the right. This is underlain by light-colored sandstones 
of the Fort Union formation, which show here and 
Greycliff. there, giving to the surface a light-gray appearance. 
Elevation 3,40 feet. As these rocks dip slightly westward, they should ap- 
St. Paul 963 miles. 
pear near railway level east of Big Timber, but no 
such rocks occur near the track. This is due to the fact that on ap- 
proaching Yellowstone Park more and more of the volcanic material 
is present in the sandstones, giving to them a dark color that makes 
them indistinguishable from the underlying Lebo.' 
After passing Big Timber the traveler obtains on the right (north) 
is best view of the Crazy Mountains,’ an isolated 
Big Timber. 
Elevation 4,095 feet. 
Population 1,022. 
St. Paul 974 miles. 
Springdale oe ae 15, p 
to Hunters H 
auenaic’ 
St. Paul 989 miles. 
group of sawtoothed peaks which rise shavphy to a 
height of 6,000 feet above the generally even surface 
ae = cas and 7,000 feet above the level of the 
. 98) is the stopping place for those going 
ot Springs, hak are visible on the right at a distance 
of about 1} miles. These springs are reported to have 
been well known to the Indians before the advent of 
the white man. They were discovered in 1864 by 
Dr. J. 
unter, who, with his family, was on his 
way to the newly discovered gold fields of Montana. 
The springs 
?The change in character of the ma- 
terials composing the Fort Union may 
not be apparent from the train, but north 
e Crazy Mountains, on Musselshell 
River, all the formations from the Colo- 
Ps | 
has not yet been explained, but the ap- 
nNarent moro fat. £. peg a 
the west is so apparent that it is now 
generally regarded as established that the 
Livingston is not a se 
other formations, produced by a great 
supply of Moen material from an up- 
and on the 
* The Chixy pormece can not in any 
sense be considered as a range, for in 
form they are merely a group of peaks and 
. The 
highest point, Crazy Peak, has an altitude 
of 11,178 feet, or about 6,000 feet above 
the general level of the plateau or bench 
land at its foot. The Crazy Mountains 
are therefore higher than many of the 
more noted mountains of Montana, and 
they are certainly more conspicuous on 
account of their compactness and isola- 
tio 
RE ERS they have no _— to 
upturned or feclead strata, whereas the 
Crazy Mountains are merely the 
of a great irregular mass, callak cack 
