Odin's knot, also called valknut consists of 3 interlocked triangles, showing a total of 9 points. It's a powerful old Norse Viking occult symbol that in many images it represents Odin and the afterlife. Some say it also represents the 9 worlds in Viking worlds, and that it said to ward off evil spirits and evil in particular. It's also a symbol of immortality and infinity. This symbol is surrounded by the Norse rune symbols that make up the quarter sized stainless steel pendant necklace that some use as an amulet.