At the opening of the King of the Vikings exhibition in Waterford were the mayor of Waterford City and County Council, Cllr Adam Wyse; Norwegian ambassador Berit Eikeland; Waterford Treasures Museums chairman Desmond Miller; Emagine Emagine co-founder Peter Grogan; and Viking Reality Experience actors Peggy Devlin, Ann Marie Heavey, Cian Manning and Joanne Tuohy. Photograph: Noel Browne

Picture yourself down low, moving across the sea in thick fog. Suddenly Viking ships loom towards you and dead bodies float in the water. You check yo(...)