On July 4, 1844, the "Independent Colony" celebrated Independence Day on the banks of the Platte River. A couple of days later, while crossing its south fork, Naomi was severely injured as the Sager wagon overturned in the shallow waters along the bank. But the pioneers pressed on. At the end of July 1844 the wagon train passed Chimney Rock, a famous landmark along the trail in what is now Nebraska. It was the reminder that the Great Plains were almost crossed and the Rocky Mountains lay right ahead.