The Helm of Awe (Icelandic: Ægishjálmr, Old Norse Œgishjalmr)
This magical runic symbol was written about in the ancient Nordic Sagas but is much disagreement about what is was or looked like.
The modern occult/neo pagan symbol was probably created in the late nineteenth century. The Helm of Awe is a popular symbol in modern Asatru, and pagan practice, and is often used as a symbol of protection against harm, enemies and harmful magic.