Siegen's Henge

Ancient structure
If visited at midnight, the ghost of a great warrior will appear at Seigen's Henge. If you can last until the sun rises, he will grant you a boon.
The priests of the High Shrine of Morjana also take care of Seigen's Henge but on an occasionally basis.
The old priest of Tryhk used to take care of Seigen's Henge but, after going mad, it was mostly abandoned.
The Will o' the Forest can be seen roaming the henge around midnight (it is actually the ghost of the great warrior).
The Sympfilfin know about the ghost at Seigen's Henge but none of their warriors have been able to best him and it drives them up the wall. Any person who did would make enemies of the tribe.