The headquarters of the Children of the Light. It is located in Amador. The Dome of Truth is the central structure of the Fortress. It is a great meeting hall covered by a gleaming white dome a hundred feet across.
LoC,Ch29 - Thom reports to Elayne that there are rampant rumors that Morgase is in the Fortress of the Light. Elayne does not believe it, convinced that her mother is dead.
LoC,Ch31 - The Dome of Truth is a gleaming white building located in the Fortress of the Light. It is covered by a huge dome a hundred feet across. It is used as the gathering place for the most solemn meetings of the Children of the Light. Eamon Valda meets Rhadam Asunawa there.