Hello. I came across http://www.pyramidtexts.com long time ago and find out the technique from Clesson Harvey's translation that the Atlanteans or Ancient Egyptian that they would enter the pyramid which is complete darkness, and then they will focus the gaze about 6 finger width in front of the brows that tiny dot of star light and then use the mouth to breath. Saying "Sah heee"
When the two nostrils complete blocks, that is when the third eye starts to open.
I have practiced a little when I have a completely dark room. I experience what he has described in the website
There is a screen to unfold, like watching the movie.
Very similar to the dream state, the difference is the dream state most of the time. My person will got suck into the dream and being one of the character of the dream and hence lose lucidity.
I notice that 6 finger width is also where the area of the nostrils and the area above the upper lips. The area that is used in Anapana and also one of the focus point in the after state of Kriya Pranayama.
And the gaze of tibetan is very similar and they are not just using the upper gaze of that 6 finger width as of the Atlantean
Or 6 finger width below like that of the Thervada or Kriya technique.
Moroever, They will also use left and right gaze.
I just see this is very interesting stuff but I do not have a completely dark room anymore. I see a completely dark room for an extended period of time can really do magic.
Perhaps that why all the tradition has some practice similar to the Tibetan dark retreat.