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In page Charn:

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Charn and the realm in which it resided ceased to exist entirely after Jadis and the children left. Later, when Aslan and the children are in the Wood between the Worlds, Aslan shows them that the puddle leading to Charn is dried up, as the empty world has been destroyed. Jadis entered Narnia with the humans from Earth, and 900 years later appears as the White Witch in The Lion, the Witch and the Wardrobe, ruling that land for 100 years until Aslan returned and defeated her with the aid of the four Pevensie children.[1]