Fourth Level beginning is dark. Later on, your Light shines and everybody’s Light shines, so the whole Fourth Level is also very bright. Just the buffer zone is dark. That place is to stop any of the Three Worlds to enter the Fifth. That’s the border buffer zone, so nobody can enter the Fourth Level without a guide. Without Master, you can’t go there; no guarantee. You go there, you might be disintegrated or lost in this kind of memory sadness, whatever, forever.