blog posts Reading history in the soil Jan 28, 2020 12:15 pm by REBECCA BARZILAIArchaeological Survey Share on Facebook Tweet Email Postdoctoral researcher Rebecca Barzilai uses a variety of techniques to study artifacts from ancient sites. Photo by Fred Zwicky Images Postdoctoral researcher Rebecca Barzilai describes mapping and collecting soil samples from the floor of a religious shrine in Greater Cahokia, an ancient Native American settlement on the Mississippi River in and around present-day St. Louis. Share on Facebook Tweet Email