Black Hole Region

"And yet we have all known flights when of a sudden, each for himself, it has seemed to us that we have crossed the border of the world of reality; when, only a couple hours from port, we have felt ourselves more distant from it than we should feel if we were in India; when there has come a premonition of an incursion into a forbidden world whence it was going to be infinitely difficult to return. Thus, when Mermoz first crossed the South Atlantic in a hydroplane, as day was dying he ran foul of the Black Hole region, off Africa. Straight ahead of him were the tails of tornadoes rising minute by minute gradually higher, rising as a wall is built; and then the night came down upon these preliminaries and swallowed them up; and when, an hour later, he slipped under the clouds, he came into a fantastic kingdom. Great black waterspouts had reared themselves seemingly at the immobility of temple pillars. Swollen at their tops, they were supporting the squat and lowering arch of the tempest, but through the rifts in the arch there fell slabs of light and the full moon sent her radiant beams between the pillars down upon the frozen tiles of the sea. Through these uninhabited ruins Mermoz made his way, gliding slantwise from one channel of light to the next, circling round those giant pillars in which there must have rumbled the upsurge of the sea, flying for four hours through these corridors of moonlight toward the exit from the temple. And this spectacle was so overwhelming that only after he got through the Black Hole did Mermoz awaken to the fact that he had not been afraid."

(Antoine de Saint Exupery, Wind, Sand and Stars")