Minecraft – make the already created and edited superflat bigger

minecraft-java-edition

I am making a city with a river, a forest, and a lot of buildings. But when I made it I didn't know about presets, so it has the predetermined height of a superflat: 4. Can I add more stone below with NBTexplorer or whatever so the world is bigger, but my building are still on the upper layer?

Best Answer

I believe that the easiest to create more world below what you already have, you must make a new superflat world with the extended stone below and copy what you have over with MCEdit or another program like that (I am not too familiar). The world should remain intact and you should have the desired space below you to build.