In this episode, the hosts reflect on their recent experiences at an awards ceremony, share insights from their visit to the Titanic exhibition, and discuss their ongoing projects. They welcome Professor David Nash, who shares his journey from geology to archaeology, focusing on his research on silcrete and sarsens, the formation of the stones of Stonehenge, and the interdisciplinary nature of his work. The conversation delves into the mysteries of Stonehenge, the significance of ancient DNA, and the excitement of time travel to witness the construction of historical monuments.