Minecraft's world is made up of chunks, which are 16 x 16 blocks large on the X and Z axis, and 384 blocks on the Y axis. When you first load into a world, a set number of chunks load around you, ...

When you create a new Minecraft world, the game starts making a new map and loads a few chunks where you are going to spawn for the first time. As you move around, new chunks generate, while the old ...