Yarm Tree Myth

On the Gods Wall and in the myths of the Kenstratae, there is a myth about the liberation of the Yarm Tree. Arakang and Galgarenge were determined to free it while Ulkamoon and Oroypsus defend it. Galgarenge has to fight Ulkamoon while Arakang has to eat whatever food is offered to him.

Commentary: What is the significance of this myth? What does it mean? It's clearly important enough for Murharzarm to have it depicted on the Gods Wall as a record of his enthronement yet neither the Kenstratae or the Dara Happans pay much attention to it.