>>530637857
They're already sort of accessible via dreams (lucid), especially if you spend time observing your surroundings and thinking about them, then analyzing how they relate to the locations in your dreams.
I went down a Castaneda rabbithole before and if you look up their "darkroom practice" it's reminiscent of what Ralsei says about "taking away the light that wasn't there until you reach another side and start to see things again"