Keywords: SheridanVesuviusFootprints.jpg Thousands of footprints in the surge ash deposit of the Avellino eruption 3460 BP ca - +/-65 yrs carbon-dated testify to an en masse exodus from the devastated zone Proceedings of the National Academy of Sciences vol 103 2006-03-21 Pierpaolo Petrone PD-USGov Vesuvius eruptions 3800 BP Pomici di Avellino Footprints Trackways fossils |