136 ■ GUIDEBOOK OF THE WESTEEN UNITED STATES. 



Near Ucon, as elsewhere in the valley, all trees except those along 

 Snake River have been planted by the settlers. The main highway 

 from Idaho Falls to Yellowstone Park parallels the raiboad for several 

 miles, but farther north it foUows section hnes, making the distance 



towns bv the hisrhwav somewhat 



mileage. 



Ucon the sum mi 



three 

 come 



into fuU view. The Teton ^ 

 tribe. In ^'Astoria/' Wasliin 

 John Jacob Astor's exDcditio] 



named 



at the mou 

 mountains 



September 15 one of the guides pointed to three moiiutain peaks glistening ■with 

 Bno\r, which rose, he said, above a fork of CoUimbia Hiver. These remarkable peaks 

 are known to some travelers as the Tetons; as they had been guiding points for many 

 daj^ to Mr. Hunt, he gave them the name of the Pilot Knobs. 



w 



The Astor party came into Idaho near Victor, the present terminus 

 of a branch of the Oregon Short Line at the west foot of the Tetons, 

 and followed down the valley of Teton Kiver, reaching Henrys 

 (North) Fork of Snake Kiver near the present site of St. Anthony, 

 where there was then a ^'fort^^ estabhshed by Mr. Henry, of the 

 Missouri Fur Co. At the fort they built canoes and started down 

 Snake River, The next day they reached some faUs about 30 feet 

 high, took another day to portage around them, and then pursued 

 their journeys southward from the present site of Idaho Falls. They 

 soon found the river unnavigable, had to abandon their canoes and 

 strike across country, and endured terrible privations the following 

 winter, the account of which is told in thrilling narrative by Irving. 



A branch railroad rimning northwest from Ucon passes through 

 Menan, 2 miles south of the Market Lake Craters. 



Rigby is the largest town in the east end of Jefferson County and 

 is the trading and shipping point for an agricultural district having a 



population of several thousand. It was organized in 

 Rigby. j^ggg ^j |]^^ Mormon apostle John W. Taylor, from 



Elevation 4 851 feet. Utah, and WiUiam F. Rigby, of the local church 



Population ooo- i ■ • 4 o ./^ 7 



ogden 198 mues. authontics. A post offico was estabhshed in 1SS8, 



and the railroad came in 1899. Within 15 or 20 

 miles above Rigby, on Snake River, are the headgates of a dozen or 

 more canals in one stretch of the river — a canal every three-cjuartcre of 

 a mile. These canals, when full; carry every minute enough water to 

 flood 8| acres to a depth of more than 1 foot. This great system of 

 canals was built not by the Government or by promoters, but by the 

 ranchers whose land thev irrip:ate. The first canals were built between 



