This stone which was collected on a beach in Northern California has engraved, painted and sealed onto it a Rúnseiða (Rune spell) for Fenrisúlfr (Fenrir).
Rúnseiða for Fenrisúlfr description: Represents the black wolf, Fenrisúlfr. Þurs symbolizes the pure destructive nature of Fenrisúlfr and his eldþurs blood. The wild, feral and ravenous essence of the untamed beast. Sól symbolizes his Múspel-essence, and a myrkstave Algiz as his place within the death trinity.