MICHELANGELO Buonarroti
(b. 1475, Caprese, d. 1564, Roma)

The Delphic Sibyl (detail)

1509
Fresco
Cappella Sistina, Vatican

In the center of the face - seen frontally, half in the light and half in a moderate shadow - there are traces of a crossincised to mark the vertical axis of the oval and the alignment of the eyes.