Endless Cavern World Generator

This mod turns your world into one giant endless cavern. With a bedrock roof and a bedrock floor you are stuck in one endless cave. Beacons still work though!.

This mod also has a lot of consideration for structures and unlike a lot of other world Gen mods will ensure that buildings and other structures that generate naturally with the world will remain intact.

You can also find floating ocean structures inside of giant jars. Plus natural spires that will allow you to connect between different stratas.

If you want a Minecraft world that feels almost alien but still manages to create some really interesting terrain and you love exploring This is it for you. 

Also really awesome for elytra lovers.