Bindu - Standard Yantras contain the Bindu as the central level from the yantra. It is said for being the symbolic illustration of the first form, often called ellipsoid or linga. It's considered to be the chakra of pure consciousness, and therefore, the Crown Chakra Yantra (or Sahasrara Chakra Yantra) https://www.youtube.com/@Mahavidyabaglamukhi