Cache Valley is a broad arid agricultural valley in northern Utah and southern Idaho in the United States. 
It extends approximately 50 mi (80 km) north from Avon, Utah to north of Preston, Idaho along the west side 
of the Bear River Mountains, the northernmost extension of the Wasatch Range, and along the east side of the 
Wellsville Mountains. It is largely drained and irrigated by the Bear River 
and its tributaries, into the watershed of the Great Salt Lake.

In the late 1840s the valley was the site of early Mormon settlement. As the first Mormon (LDS) settlers including Brigham Young 
moved close to the area they began early contacts with Jim Bridger. Bridger recommended that the settlers first move into 
Cache Valley due to its relative abundance of fresh water. 
Instead, Brigham Young decided to settle in the area that has since become Salt Lake City, Utah.

As the LDS settlers began to prosper they began to create new settlements in other areas of the American mountain west.
One of their early settlements included Logan, Utah and the eventual influx of people helped create the large number 
of towns that can now be found in Cache Valley. In fact, due to the strong historical ties to the people within 
the valley, special agreements between the states of Utah and Idaho allow students who live in the valley and in 
Idaho can attend Utah State University at the same cost as Utah residents.

In 1863 it was the site of the Bear River Massacre.

The cultural and economic hub of Cache Valley is Logan, Utah, home of Utah State University.
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