Underground WorldsMods · 1.19 – 26.xAdds underground biomes and underground dungeons, as well as some above ground structures, in a modular and configurable way.
Free3,091,424 downloads
Adds new vanilla+ cave biomes and underground content!
Direct download from Modrinth · 4,661,949 downloads
YUNG's Cave Biomes is a mod made by YUNGNICKYOUNG. Adds new vanilla+ cave biomes and underground content!
It supports Minecraft 1.18 – 26.x. It has been downloaded 4,661,949 times on Modrinth. The last update came out on Aug 19, 2026.
YUNG's Cave Biomes has had 19 releases on Modrinth since Sep 30, 2024. 4 of them came out in the past year. The newest is 26.1.2-NeoForge-4.1.1, released on Aug 19, 2026. It is made for Minecraft 26.1.1, 26.1.2. It runs on NeoForge. The download is 12.4 MB.
| Version | Released | Minecraft | Type |
|---|---|---|---|
26.1.2-NeoForge-4.1.1 | Aug 19, 2026 | 26.1.1, 26.1.2 | Release |
26.1.2-Fabric-4.1.1 | Aug 19, 2026 | 26.1.1, 26.1.2 | Release |
26.1.2-NeoForge-4.1.0 | Jun 24, 2026 | 26.1.1, 26.1.2 | Release |
26.1.2-Fabric-4.1.0 | Jun 24, 2026 | 26.1.1, 26.1.2 | Release |
1.21.1-Fabric-3.1.1 | Aug 21, 2025 | 1.21, 1.21.1 | Release |
[](modrinth.com/mod/yungs-api) [](https://discord.…)
YUNG's Cave Biomes is a vanilla+ mod that adds two new cave biomes to the game, the Frosted Caves and the Lost Caves! Each biome features the addition of a new mob, new blocks, items, music, and more.
YUNG's Cave Biomes is intended to be fully compatible with every mod, including other worldgen mods. Any known incompatibility notes will be mentioned here. If you encounter any compatibility issues, please let us know in the Discord!
Written by YUNGNICKYOUNG. Read it with pictures on Modrinth.
This mod is needed on both the server and every player who joins.
Install Fabric, Forge and NeoForge for Minecraft 1.18 – 26.x.
Add the mods it needs: YUNG's API.
Download the .jar file from Modrinth and put it in the mods folder of your .minecraft directory.
Start Minecraft with the Fabric profile.
Easier: in Prism Launcher or the Modrinth App, search for YUNG's Cave Biomes in your instance's mods and click Install. It adds the loader and the mods it needs for you.
Full guide: How to install Minecraft mods
| Resource | Downloads | Versions | Last update | Price |
|---|---|---|---|---|
| YUNG's Cave Biomesthe one you looked at | 4.7M | 1.18 – 26.x | Aug 19, 2026 | Free |
| Underground WorldsHexagonNico | 3.1M | 1.19 – 26.x | 2 days ago | Free |
 Biomes O' PlentyForstride | 38.9M | 1.8 – 26.x | 12 days ago | Free |
 Friends&Foesfaboslav | 12.3M | 1.18 – 26.x | 20 days ago | Free |
Yes. YUNG's Cave Biomes supports Minecraft 26.x. All supported versions: 26.x, 1.21, 1.20, 1.18.
Yes. YUNG's Cave Biomes is free to download from Modrinth.
Both. The server and every player need YUNG's Cave Biomes installed.
Yes: YUNG's API. Install it before YUNG's Cave Biomes.
Yes. The last update came out in the past day.
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