Barry Raftery is a man who is a historian and an expert on things that happened a long time ago. He studies a time called the Iron Age which happened a really long time ago - so long ago, even older than your great-great-grandparents! During the Iron Age, people used to live in different ways than we do now, and Barry Raftery helps us understand what it was like to live back then. He looks for evidence like old tools, bones, and pots to help us learn more about what kind of lives people had a long time ago. So, we can thank Barry Raftery for helping us learn about our history and how people used to live so long ago!