…Saturn’s physical presence in this world — his idol, if you will — is said to be a black stone, cube, or obelisk. … The Kaaba [at Mecca] itself, which was originally an icon of the Time deity, is another prominent example of the Black Cube. … Further, the symbol or emblem of the Black Cube appears in many contemporary art and media projects, often as a symbol of alien menace or alterity. Examples include Clive Barker’s Hellraiser cubes, and the Leviathan deity itself. Even a Google search for ‘Black Cube’ shows an extensive list of corporations that use the Black Cube as a symbol, or actual Black Cubes that are installed around the world.
— Arthur Moros, The Cult of the Black Cube