Dark Island

The Dark Island, also known as "The Island Where Dreams Come True", was a highly mysterious, possibly enchanted area located in the Eastern Ocean. It was a region of semi-solid, fog-like darkness, with no obvious shore or land mass. The entire area had the ability to bring dreams to life-a fact which made it a much sought-after location for sailors. Unfortunately, the Dark Island's powers brought dreams, not daydreams, not longings, to life-especially "dreams that made you afraid of going back to sleep". As a result, madness was the usual fate to anyone unfortunate enough to enter its shadows...especially when visitors found that getting away was far more difficult than getting in.

Within the darkness around the island, most lights (such as lanterns) looked weak and unnatural, the water appeared inky black, travellers felt extremely cold, and an ominous silence reigned over all, no matter how much noise was made. It is unknown whether the fog around the island is the source of its terrible powers, or if the darkness itself is generated by the island as part of its vile enchantments.

Trivia

 * The Dark Island appears to be a manifestation of fear in the world of Narnia. This is supported by the fact that it brings nightmares (which often embody a person's worst fears)to life, as well as the fact that the fearless Reepicheep is the only crewmember completely unaffected by it.
 * Aslan's intervention appears to symbolize the role of religion in overcoming fear. His aid is invoked by Lucy's prayers, which in themselves assuage some of her fear; he creates a beam of light that draws everyone's undivided attention; his approaching albatross form briefly appears as a cross (and in itself could be seen as a Narnian version of an angel); Drinian steering after it seems similar to a lost soul using God as a base from which to escape negative emotions; and the entire premise of leading a ship out of literal darkness, into twilight, and then open air bears resemblence to accounts of Jesus healing a blind man.
 * Both endings cement the defeat of fear for the characters, but the British version implies that Aslan's work has actually destroyed the embodiment of fear, while the American version implies that it has only been suppressed.