Clavicula Nox is a magical symbol, one of the key symbol in Dragon Rouge. In Latin, phrase clavicula noctis literally means key of night.
Clavicula Nox symbol is composed by Atlantis symbol – a trident placed into a circle. The trident, symbol of Neptune, Shiva and also devil, symbolise unconsciousness, the circle represent consciousness. Clavicula Nox is a symbol which means process of turning unconsciousness into a consciousness.
It is a psychological meaning of Atlantis myths. Thomas Karlsson, co-founder of Dragon Rouge, explain further origins and additional meaning of the symbol:
Neptune, Shiva and Satan are symbols of lower surface, of a dark side of existence. This symbol shows us the existence of male and female elements. It is a tantric revelation of combination a man and woman as a center to stimulate a dark power. Clavicula Nox is the astral key, which opens the gates to many different experiences. They may be found after an Dragon Rouge initiation, being at 5th level, Thagirion. Gates are called Xon, and Clavicula Nox is a map which helps to find them. Clavicula Nox is also a key. Key of Night, Nox - of spirit, of Xon gate. ” (Answers.com)