Although the Light's Hope Chapel was neutral, the main city closest to it was Undercity.
This maze was originally under the capital of Lordaeron. The Forgotten Ones had built tunnels, caves and all sorts of structures within it. Sylvanas dwelled in this city and directed her Undead army to resist against the Scourge Army.
Sylvanas Windrunner was once a Ranger General of Silvermoon City; she protected Quel'Thalas, the Elf Kingdom.
She died in the third war and her home was destroyed by Arthas and the Scourge Army, but death was not her final destination – Arthas had taken her soul from her body and turned her into a hateful demoness. She had become one of the Scourge Army.
When Illidan Stormwind's attacks successfully weakened the Lich King, Sylvanas and other strong-willed Undead escaped from its control. They built a new home in the ruins of Lordaeron and called themselves the "Forgotten Ones", swearing their revenge to the Lich King regardless of the price.
