







Subsurface Data Pack is a data pack that introduces 11 new cave biomes to the Overworld and Nether, adding more diversity and adventure to your underground explorations. These new cave biomes can generate inside existing vanilla cave biomes, creating hybrid cave biomes and ensuring compatibility with most other data packs. Enjoy playing this data pack!
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Features:
- Icicle Caves
Icicle caves can spawn under snowy non-mountain biomes. They contain Icicle on the celling and the floor, and ice patches, which have blue ice if they replace deepslate. Aquifers in this cave biome are frozen over. Be careful when placing torches, as they could melt the ice and wash the torches away. - Sand Caves
Sand caves can spawn under the desert biome. They contain sand and sandstone patches. Some of the sand spawns floating, so be careful not to cause a cave-in. - Swamp Caves
Swamp caves can spawn under the swamp and mangrove swamp biomes. They contain mushrooms, dead bushes, vines, and patches of clay, mud, water and various dripleafs. Aquifers in this cave biome have lily pads and seagrass patches. - Underground Forest
Underground forests can spawn under biomes that generate oak trees. The ground here is covered in grass, and they contain mushrooms, vines, patches of coarse dirt, and oak trees. glow lichen spawns on the leaves - Coral Caves
Coral caves can spawn under the warm ocean biome. They only exist in aquifers and water caves. They contain coral, kelp and seagrass. - Foliage Caves
Foliage caves can spawn under jungle biomes. The ground here is covered in grass and ferns. Jungle bushes, jungle trees, mega jungle trees, and bamboo spawn here, and the caves contain mushrooms, vines, and glow lichen on the celling of large caves. Aquifers in this cave biome are made of mud and have seagrass patches. Caves that spawn close to the surface can have skylights. - Fungal Caves
Fungal caves can spawn under the mushroom island biome. The ground here is covered in mycelium, and large and small mushrooms. this biome also contains hanging mushroom roots, wall mushrooms, and glow lichen patches. - Mesa Caves
Mesa caves can spawn under mesa biomes. They contain red sand and red sandstone patches. colored terracotta spawns here, as well as terracotta plateaus. - Underground Taiga
Underground taigas can spawn under biomes that generate spruce trees. The ground here is covered in grass and ferns, and they contain mushrooms, vines, patches of coarse dirt, spruce trees, mega spruce trees, sweet berries, pumpkins, and mossy cobblestone rocks. glow lichen spawns on the leaves. - Soul Canyons
Soul canyons spawn in the nether in the nether wastes and soul sand valley. The ground here is covered in soul sand and soul soil. They contain nether wart, soul fire, fossils, giant nether warts, and weeping vines and nether wart blocks on the celling. - Quartz Canyons
Soul canyons spawn in the nether in the crimson and warped forests. They contain giant quartz crystals, and quartz ore can be found in the surrounding nether rack.
Screenshots:











Subsurface Data Pack Download Links
For Minecraft 1.20.4, 1.20.2, 1.20.1, 1.20
For Minecraft 1.20.6
For Minecraft 1.21.1, 1.21
For Minecraft 1.21.5, 1.21.4
For Minecraft 1.21.8, 1.21.7, 1.21.6
For Minecraft 1.21.11, 1.21.10, 1.21.9
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Download size: 108 KB
- Download link checked 17 Jun 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.