<Li> <P> The Grave relief of Publius Aiedius and Aiedia, 30 BC, Pergamon Museum (Berlin) </P> </Li> <P> The Grave relief of Publius Aiedius and Aiedia, 30 BC, Pergamon Museum (Berlin) </P> <Li> <P> Augustus of Prima Porta, statue of the emperor Augustus, 1st century AD, Vatican Museums </P> </Li> <P> Augustus of Prima Porta, statue of the emperor Augustus, 1st century AD, Vatican Museums </P>

Where were prehistoric paintings done and how did this contribute to their survival