36 
SURVEY OF SAN GORGONIO PASS. 
at the base of the steep hill, with an ascending grade of 100 feet to the mile, the length of such 
a tunnel would be 3.4 miles. Such a tunnel would emerge on the eastern slope at a point 
below all steep grades, and from its eastern extremity to the Mohave no grade exceeding 90 feet 
would be required. In the Cajon creek the grades would be steeper, but probably could be 
much reduced by taking advantage of the side-slopes. 
The survey of the Cajon Pass finished the work assigned to Mr. Smith, and the information 
he obtained was very valuable. His note-books show that his work was done in a very thorough 
manner. 
LIEUTENANT PARKE’S ROUTE—SAN GORGONIO PASS. 
On the 8th November, as before stated, the party was divided. The results of the expedition 
down the Mohave have already been detailed. Lieutenant Parke, with the wagon-train, passed 
through the Cajon without difficulty, and reached the Mormon settlement of San Bernardino, a 
flourishing little village near the mountain of the same name. 
MORMON SETTLEMENT IN THE SAN BERNARDINO VALLEY, WITH A VIEW OF THE PEAKS OF SAN BERNARDINO AND SAN GORGONIO. 
Having procured supplies here, he proceeded through the pass of San Gorgonio, thus once 
more arriving to the eastward of the Coast range. The pass was surveyed, and proved to be a 
very good one. 
The high mountain of San Bernardino is the highest in the Coast range. Its height is not 
known with accuracy, but approaches 9,000 feet. Southeast of this mountain is the peak of 
San Gorgonio, nearly as high. These two mountains, whose peaks are 30 miles apart, approach 
each other at their base, and the open pass between is known as the pass of San Gorgonio, and 
