Charn (city)

See here if you are looking for the World of Charn

Charn was a martial empire forged on a world separate from both Narnia and Earth, where a civil war occured between the usurper Jadis and her sister, resulting in Jadis' releasing of an extremely powerful spell that killed all her subjects and family, turning all to stone, even her, unless someone rang a bell to awaken her from her petrification. Digory Kirke accidentally did this, and failed to stop Jadis from entering his world, and eventually, the World of Narnia, which she took over and became known as the White Witch, Empress of the Lone Isles and Queen of Narnia.