Dragon's Valley is a canyon near the desert wasteland where Satou first appeared in the other-world. The wasteland has reddish-brown colored earth, Satou likened it with the American Grand Canyon.
Dragon's Valley was home to the Dragon God, Akon Kagura, her familiars and the other dragons which are under the rule of Akon Kagura. The valley was accidentally demolished by three consecutive uses of [Meteor Shower] activated by Satou when he was being attacked by an army of Lizardmen. As a result, the Dragon God along with her familiar and all the dragons who is inhabitants the Valley were killed in the process (70% of the dragon race in the Satou current world).
The valley is protected by a barrier of invisible force field.
During in her earlier as a hero, Mito was invited once by Akon Kagura to the valley and received Colaim Solaish as a hero and founded the Shiga Kingdom.