Mysterious phenomena: Antarctica
Or what is known as the land of eternal darkness, and the secret of this name is that the more you advance and penetrate, you will not reach anything, even the sun's rays cannot reach farther from that place.
Total darkness and permanent danger, as it is always the case in the ice wall of the frozen southern continent, as it is considered one of the secrets of the earth, and the picture was taken off the coast only, let alone if you advance a few kilometers.
It is said that he who can overcome these darknesses in peace will reveal some of the secrets of unknown history and forbidden by the governments and powers of the world.