Malchow Mounds State Preserve features a prehistoric cemetery with a concentration of sixty conical and linear mounds probably constructed during the Middle Woodland period (100 b.c.–a.d. 300). This 6-acre preserve is located one mile north of Kingston and thirteen miles north of Burlington in Des Moines County. The mounds were surveyed in 1934 by famous Iowa archaeologist Ellison Orr and again in 1968 by the University of Iowa. They were donated to the state in 1974 by Charles A. Poisel and were dedicated as an archaeological state preserve in 1978. The area is named after Lewis H. Malchow, a previous owner