Terralith

Terralith 2.0 ~ Overworld Evolved is a Datapack made to completely revolutionize the Overworld's generation. Released November 30th of 2021, at the same time as, Terralith 2.0 makes a full use of the new WorldGen tools of this version to create beautiful landscapes with more than 70 new biomes and new terrain types, inspired by places all around the world or also fantastical fauna, while also enhancing existing biomes and adding new variants to them.

The new caves have also been enhanced with new cave shapes and about 10 new cave types.