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  • Preserving the Past in 3D

    A limestone boulder with petroglyphs carved into it sits inside a rock shelter with a view toward the Mississippi River floodplain, below. One of the carvings is of a superhuman eye with a cross-in-circle motif at its center.

    A limestone boulder with petroglyphs carved into it sits inside a rock shelter with a view toward the Mississippi River floodplain, below. One of the carvings is of a superhuman eye with a cross-in-circle motif at its center.

    Photo by Alleen Betzenhauser

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  • Editor’s notes:

    The Illinois State Archaeological Survey is a division of the Prairie Research Institute at the University of Illinois.

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