This article is a stub. You can help Radiant Historia Wiki by expanding it.

The Royal Hall is an underground area that is filled with the power of Mana. Its entrance is hidden in Granorg Castle's basement library archive, and it is here that, by using the soul of a Sacrifice, Granorg's Royal Family performs the Ritual of Flux to stabilize the Mana in the continent, slowing down the desertification progress.