The void is an endgame dimension that can only be accessed by breaking through the bedrock in the overworld by using the Neptunium Pickaxe. This dimension is a pitch-black flat world with the exception of the platform generating at the coordinates 0, 0, 0. Blocks cannot be broken or placed in this dimension and the Neptunium Pickaxe will cease to function. In the direct center of this platform is Herobrine's Altar. The netherrack atop the altar can only be lit by the Titan's Flame. Upon lighting the netherrack, the Herobrine bossfight will begin. You cannot leave this dimension unless you defeat Herobrine. You must have a way to negate fall damage when entering the void with methods such as slow falling potions, elytras, or a full set of Bloodsteel armor, as you will fall very far.