Figure 11
From: RETRACTED ARTICLE: The Hopewell airburst event, 1699–1567 years ago (252–383 CE)
The location, stratigraphy, and sample sites (white circles) of the Marietta earthworks and mounds site, Washington County, Ohio. Kenneth Barnett Tankersley used Microsoft PowerPoint for Mac Version 16.41 (www.microsoft.com) to create this figure.
