How many victims were consumed by these ceremonies? In 1487, well before any contact with Europeans, the Aztecs inaugurated their great new Templo Mayor. The day began with four lines of victims, each line stretching for two miles. The historian and anthropologist Inga Clendinnen has estimated the total number sacrificed on that occasion as twenty thousand, although others have placed the number as high as eighty thousand.12 This was, of course, a onetime occasion. During regular festivals, the numbers killed at a particular temple probably ran around two thousand a day,13 and there were hundreds of these sacrificial sites. Hence, piles of skulls numbering into tens of thousands were widespread, just as Diaz reported.