The Sephirot of the Kabbalah

[darklight]

Yeah, I'm not even sure if it is possible to cross it in physical incarnation, but who knows.  Seems more of a higher density thing.

It´s not physical, it is the visual experience of the adept with the inner eye in the densities six, seven and eight. There is no physical entrance.

In my own experience, da´at was pitch black.