The Naples Mound 8 (also Naples-Russel Mound 8 or Illinois Archaeological Survey #PK 335) is a Havana Hopewell culture mound site located somewhere in or near the Pike County, Illinois city of Griggsville. The mound was listed on the National Register of Historic Places in 1975.
Connection to Mormonism 
In May and June 1834 Joseph Smith led a Mormon group (a paramilitary expedition known as Zion's Camp) on a march from Kirtland, Ohio to Jackson County, Missouri. On June 3, while passing through southern Illinois near Griggsville, some bones were discovered on the top of a mound. These bones were identified by Smith as belonging to a Lamanite prophet-warrior named Zelph.
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