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A look beneath the surface: Research reveals details about interior of linear mounds

Luther College student research assistant Ian Gonzales conducts a resistivity survey of a linear mound. It’s one of two techniques students and their professor, Colin Betts, used to look inside the mounds and get an idea of how they were built based on the earth’s physical structure. (Photo submitted) From the exterior, each of the linear mounds Luther College professor Collin Betts and his students researched appeared to be uniform—largely unb…
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guttenbergpress.com broke the news in Guttenberg, United States on Wednesday, September 3, 2025.
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