Remove bedrock roof from nether-like dimension?

Started by maniCARNY on

Topic category: Help with Minecraft modding (Java Edition)

Joined Aug 2024
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Remove bedrock roof from nether-like dimension?

Is it possible to replace the bedrock roof with a different block? Or even remove the roof altogether (like setting the Y limit)? 

It's become trouble since the dimension portal likes to create itself above the bedrock roof.

Joined Feb 2026
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I was able to do something…
Fri, 02/20/2026 - 01:16

I was able to do something similar to what you wanna do here, but warning, it is VERY jank. basically, what I did was make a structure that would generate as a feature and cut off the roof because the structure was just a massive rectangle of air blocks. I made two features, one at a constant y value to remove all bedrock, and one that was narrower but generated more frequently between set y values and with random x and z. the result is quite blocky generation and there are narrow pillars all over, but that could probably be fixed by maybe making them smaller but many times more frequent. idk, but I will warn you again, this is a very janky solution.