Historically, it is the site of the first statewide Pioneer Day Celebration, something Mormons do to celebrate Brigham Young's establishment of the city. According to the plaque, "The first statewide Pioneer Day Celebration was held in this basin July 23-24, 1857. Headed by Brigham Young, the company reaching here July 23 numbered 2,587 persons with 464 carriages and wagons, 1,028 horses and mules, and 332 oxen and cows. A program of addresses, six brass bands, singing, athletic events, drills by six companies of militia, and dancing was punctuated by salutes from a brass howitzer. US flags were flown from two highest peaks and two highest trees, the flag-tree in front of Brigham Young's campsite being 70 feet NW of here. At noon July 24, Judson Stoddard and AO Smoot, 20 days from the states with Elias Smith and DP Rockwell, arrived here with news of the advance of Johnston's army against the 'Mormons.' The company returned in orderly formation July 25th." The army mentioned was Joseph Johnston (later of Confederate Civil War fame) which the federal government was sending against the Mormons who were refusing to acknowledge federal control of their territory.
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