
University of Iowa archaeologists use laser-transit technology for high-precision mapping at the site of a new wastewater treatment facility in Des Moines. The archaeologists discovered artifacts nearly 7,000 years old at the site. office of the state archaeologist
"Those are the big research questions that are going to drive the lab analysis that takes place next," state archaeologist John Doershuk said. "We have thousands of artifacts that will tell us about their diet and map info that will tell us how they used their space."
Workers found more than 6,000 artifacts, from arrowheads and spear points to flint chips and even two human skeletons thought to be 6,680 to 6,890 years old at the site of a new wastewater treatment facility in Des Moines, north of the Des Moines River.
They are among some of the oldest and most well-preserved artifacts ever uncovered in Iowa.