The 23-year-old researcher at the University of Chicago has uncovered 100 previously unrecorded caravanserais — giant, protected stopover points for merchants traveling along the Silk Road. Using a $2 million award from the U.S. Department of State, Boak, as part of the Afghan Heritage Mapping Partnership, has had access to commercial satellite imagery, aerial data from the U.S. Army Corps of Engineers and even spy satellite data from the 1960s and 1970s.
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