Most of the Roman paintings we see today are from examples excavated from Pompeii and Herculaneum, preserved under the ashes of the Mount Vesuvius eruption in 79 AD. The German archaeologist, August Mau, excavated the Pompeii remains during the 1800s and developed four classifications for the styles of wall paintings found, namely, Incrustation Style, Architectural Style, Ornate Style, and Intricate Style.