Avalon takes its name from the Welsh aball ("apple"). Geoffrey of Monmouth’s Vita Merlini gives the foundational description: an island in the Western sea where the soil produces all things without ploughing or sowing, where vine and apple grow wild, where the inhabitants live for a hundred years. Nine sisters rule the island under the elder, Morgen, who is "the most beautiful and the most learned of the nine in the arts of healing." The eight other sisters in Geoffrey’s list are Moronoe, Mazoe, Gliten, Glitonea, Gliton, Tyronoe, Thiten, and Thiton. Morgen knows the medicinal use of every herb on the island and can fly in the shape of a bird. To this island, in the Vita Merlini, Arthur is carried in a barge after Camlann, with Taliesin the bard and Barinthus the boatman aboard.
Later tradition adds layers. The Vulgate Cycle and Malory expand Morgen into Morgan le Fay, sister and sometime adversary of Arthur, whose role at Avalon shifts from healer-queen to ambiguous keeper of the wounded king. Excalibur’s blade is forged in the smithies of Avalon (named in the Vulgate Estoire de Merlin) and given by the Lady of the Lake from Avalon’s shore. The barge that carries Arthur away in Malory’s Morte d’Arthur (book XXI) holds three queens: Morgan le Fay, the Queen of North Wales, and the Queen of the Wastelands, with Nimue (the Lady of the Lake) standing beside them. The medieval Glastonbury monks identified Avalon with Glastonbury Tor in 1191, a piece of speculative geography that has stuck to the place since.
For video, anchor each Avalon scene to a Geoffrey or Malory moment: the misty island rising from the western sea, the orchard of nine sister-queens at noon, the forging of Excalibur in the underground smithies, the gift of Excalibur from the lake-arm, the black barge crossing the still water at twilight, the laying of the wounded Arthur on a couch of healing herbs. Lean on the Avalon palette: apple-green orchards, mist on still water, Welsh slate, gold leaf on royal cloaks, the deep blue of the western sea, candle-warm interior light. The more concrete the moment, the closer the output lands to the cycle.