The narrow stairway inside the mountain led to a door that opened into a huge marble plateau. Upon this stood a stone circle of nine of the largest hunks of polished crystal Tory had ever seen. A turbulent cloud erupted overhead, its core alive with electromagnetic activity. For twenty years the kingdoms of Prydyn, Dumnonia and Dalriada have prospered in peace under the guidance of their High King, Maelgwn of Gwynedd, and his good...