GLENWOOD, Iowa (AP) — A location in western Iowa for the proposed Loess Hills Archaeological Interpretive Center has been approved by the Iowa Preserves Advisory Board. The Council Bluffs Daily Nonpareil reports that the location is on a state preserve at the south edge of Glenwood, just across the Missouri River from Nebraska.

The multimillion-dollar center will be devoted to studying the Native Americans who lived in earthen dwellings in extreme western Iowa and eastern Nebraska between 600 and 750 years ago. The 906-acre preserve, Iowa’s largest, was previously a part of the state-operated Glenwood Resource Center.

Its re-designation as a preserve was hastened by the evidence that beneath its surface are dozens of ancient earth lodges, camping areas and agricultural pursuits.