Prairie City was a gold-mining community that once sat in the California foothills. The Folsom, California subdivision Prairie Oaks was named because it is believed that the city once stood in this general area. What was left of the town is believed to be covered in river rocks, from the gold dredging in the early 1900s. When construction was being performed for the freeway on-ramp near Intel, a few bodies were unearthed during construction. Though the names of these people are unknown, it is assumed they were Prairie City residents. Their skeletal remains were re-buried in the Mormon Island relocation cemetery, south of Folsom Lake.