The Regulus Caves: A Troglodyte Site in Meschers-sur-Gironde The Grottes du Regulus, or Regulus Caves, are a unique troglodyte attraction 12 kilometres from Royan. These historic caves are carved into the limestone cliffs of Meschers-sur-Gironde, offering breathtaking views of the Gironde estuary. Originally shaped by natural forces, humans later expanded them in the 19th century …


