Cavernous 2.2.1 [OLD] is a release file of the Minecraft data pack Cavernous Lite, made for Minecraft 1.21.3, 1.21.2. It was published on November 16, 2024 and is 1.1 MB in size. For the full description, screenshots and every other version, visit the Cavernous Lite data pack page.
How to install: Put the .zip into the datapacks folder of your world (.minecraft/saves/<world>/datapacks) and run /reload. No mods needed.