sentences:  The mound was listed on the National Register of Historic Places in 1975.In May and June 1834, Joseph Smith led a Latter Day Saint group of 150 men known as Zion's Camp on a march from Kirtland, Ohio, to Jackson County, Missouri.On June 3, while passing through west-central Illinois three miles east of Griggsville, Illinois, some men discovered a large burial mound on the west side of the Illinois River one mile south of present-day Valley city.