East of Wapello, Iowa, the Toolesboro Mound Group preserves Havana Hopewell earthworks built between 200 BCE and 100 CE near the Iowa River’s junction with the Mississippi. Their location reflects a rich environment that supported both daily life and the labor of mound building. Burials and grave goods indicate an organized society with social distinctions, ceremonial practices, and ties to the wider Hopewell exchange network, which moved materials across distant regions of North America. The area remained important in later centuries to Oneota people. Although excavation, farming, and settlement reduced the site from as many as 12 mounds to seven, it endures as a significant Native American grave place.