Holes in Vasari

A research team sponsored by the US National Geographic Society has been drilling holes in Giorgio Vasari's fresco The Battle of Marciano in the Museo di Palazzo Vecchio, Florence, in hopes of finding Leonardo da Vinci's unfinished work The Battle of Anghiari. Project workers claim a black pigment found through the holes is the same as that used in the Mona Lisa and unique to Leonardo (title link). BBC News has published a video on the subject (CLICK).