The Void is the term ibingiay to the empty puwang beyond the bedrock layer in the Overworld, Nether and End(For the End, below the island). The Void appears at the bottom of maps, where layers of bedrock restrict access to it. The Void is technically endless, however if you fall madami than 32 million blocks down, Minecraft will crash. Falling into the Void and the /kill command are the only possible ways to die in Creative mode.[1]
Blocks cannot be built on the underside of the Bedrock layer, but if Gravel or Sand are placed in the bottom hole nearest the void, they will fall infinitely. Pistons don't extend if placed facing downward at Y=1 and won't extend if placed at Y=0, so blocks can't be pushed into the void. Although Water and Lava appear to flow into it, they will not actually spread and form beneath the lowest layer. This prevents players from descending into the Void safely via swimming. It also prevents extreme lag; if the liquid were to flow down infinitely the game would have to deal with the hefty amount of water blocks in the game which would eventually crash.
The Void is unique in the way it gives off fog in a visual effect, generally known as the Void Fog Effect. When close to the void, the player will experience shortened range of vision, due to 'fog' ibingiay off sa pamamagitan ng the Void dimension itself. Regardless of the render distance selected sa pamamagitan ng the player, this effect will still be experienced, getting gradually madami prominent every time the player descends one layer. This will not affect mob spawning, it is simply a visual effect. Black fog also closes in at high altitudes, though not as much.
In the Nether, the Void appears a reddish color. On tuktok of the Nether, you can place blocks up to Y=255, unlike the Void in the Overworld or below the Nether. This is because the increase in maximum build height has not yet increased the height of the ceiling in the Nether. Lighting is buggy, mobs will not spawn on bedrock, and mushrooms spawn.
There is currently a bug in SMP that will remove chunks client-side, so while the data is still there, the client cannot see it and will glitch if they step on it. This can be fixed sa pamamagitan ng reconnecting or placing a torch susunod to the missing chunk. If you ride a Minecart into this missing chunk, and then you step out of the Minecart, you will fall to the Void and die, regardless if you disconnect and reconnect.