Thor, a Norse God, created thunder by striking his great hammer, Mjölnir. He protected the house of the Gods and humankind. The scene on the back depicts a battle between Thor and the giant Hrungnir. Thor has struck the fatal blow by throwing his hammer, but a piece of Hrungnir’s weapon, a whetstone, has lodged itself in Thor’s forehead. Around the base are Thor’s name in runes and scenes from Norse mythology.