Sommetimes, to do archaeology, you have to do archaeology on the archaeologists!
[ . . . ] Frank Huffman, from the University of Texas at Austin, had tracked down the descendants of the Dutch researchers who excavated the Homo erectus remains back in the 1930s.[ . . . ]
"He was able to tell us exactly where to dig," [Prof Russell Ciochon of the University of Iowa] said of [Huffman].