In the 1960s, archaeologists discovered in a valley near coastal Peru an artificial mound or pyramid with a crater in the top. At the time, the researchers from the Department of Anthropology at the University of Massachusetts dismissed the find as a huge mound with a looters’ pit in the middle. Bob Benfer, a professor emeritus of anthropology at MU, still isn’t sure what the structure is, but he’s certain it’s more than just a vandalized pile of rubble.