If one is flying in a lucid dream and one allows lucidity to increase without awakening, then the flying dream takes on the character of an out of body experience. Perhaps lucid dreams can be a path into whatever realm(s)
lie "before" or "above" our own physical reality. Maybe it's the Dreamtime. Maybe when we die we enter something like the realm where fully lucid dreams lie. The Tibetan Buddhists have a saying in which they liken sleep to the
"little death." And dreams akin to an immediate afterlife condition. I think there's much to be learned by bringing counsciousness to bear in dreams I think it's an exciting frontier.