This geometric symbol is most strongly connected ancient Scandinavia. Found carved into wood and stone, it’s original meaning and true name is lost to us. The name ‘valknut’ is a Victorian connection to the word.
This symbol though clearly had great importance to the people that commissioned it and carved it into beds that followed people into the graves and royal memorial stones.
The symbol has nine points. This number was extremely reversed by the ancient Norse and shows up in mythology, history and archaeology again and again. Three threes.