In 1616, after Sindri and Tryggvi returned to the Six Stones Temple, having successfully completed the Humakt, Raven and Wolf Quest, there were only four days left before Mahomravrand, when Orane’s Spindle was needed to help hold the clan together. So the two of them set out with Yaneg and Yanioth to find the place where the draugr were buried.
They traveled to the Marshedge tula, where they met with Alfgar the Grim, the clan chieftain. After some discussion of their plans to try to cleanse Horalin and destroy the Blackthorn trees, he agreed to provide them with guides to the Marsh in exchange for a small payment.
Using Sindri’s new Raven spirit, they found the location of the battlefield and confronted the draugr, as well as the spirit of the Blackthorn tree. Although Sindri was defeated, Tryggvi was able to use his Know Weakness ability to learn how to permanently slay the three draugr, and they were able to do so. After Yanioth chopped down the tree, they found Orane’s Spindle tangled in its roots. They returned home and the clan was able to perform the proper rituals just in time.
Tryggvi discovered the myth of Ernalda and the Cleansing Earth in his Book of Myths.