The Crystal Cave is a major location in the BBC series Merlin.
History[]
True to its name, the Crystal Cave are caverns filled with crystals that could foresee the future. The Crystal of Neathid came from these caves and became a powerful crystal.
The spirit of Talisian guided Merlin to the Crystal Cave, where he witnessed the many possible futures. The caves warned Merlin of the oncoming tragedy of Morgana trying to kill Uther Pendragon. Unfortunately, the vision came true when Merlin attempted to intervene. Morgana learnend Uther was her father and never intended to let the kingdom know. She attempted to assassinate him for his betrayal; however, Merlin intervened.