Seikitsu Pass

Death of Akodo
As the Ikoma Libraries and Hall of Ancestors were being built they were unexpectantly attacked by Shadowlands creatures in 99. These creatures have been much later identified as Tsuno. Akodo confronts the army in Seikitsu Pass, and just as the battle seems lost Akodo calls out to Amaterasu. Akodo's mighty roar collapses the pass on himself and the Shadowlands Army. (3E p. 10)

Lord Sun's Intervention
Seikitsu Pass was re-opened in 1150 when there was no easy way to cross the Spine of the World Mountains after the destruction of Beiden Pass. Lord Sun hurled a fireball from the sky which hit near where Seikitsu Pass once was. The impact of the fireball created the Great Crater which re-opened the Pass. The territory has been highly disputed, but control has been claimed by the Unicorn Clan. (3E p. 25)