Support and development on this data pack are discontinued.

This data pack requires my Staggered World Gen Lib data pack to do its world generation. Please make sure both of these are installed.

This data pack transforms the underground into a more diverse and interesting experience.

The following features are added by this data pack:

• 17 new underground biomes, with varying stone types, deposits, and decorations.
• 7 new fossils (in addition to the existing fossils)
• New rich ore deposits for every ore type
• 5 new dungeons found in caves

It also adds recipes to allow you to mix and match stone types when crafting stone tools, and functional blocks that use stone (furnaces, levers, blast furnaces, repeaters, etc.), as well as being able to uncraft prismarine into shards, combine walls into full blocks, and glass panes into glass blocks (so that decorations and stone types have more uses).

Installing this data pack onto worlds with underground builds below sea level may result in those builds having blocks changed/added due to the world generation this data pack performs.

A config file is available to allow speleothem generation to be disabled/enabled (enabled by default), config options to disable/enable the various structure types added by this data pack, as well as enabling/disabling individual biomes (all enabled by default) so you can exclude any biomes you don't want to generate, which you can find in the data pack at data/under_over/functions/config.mcfunction.