data pack
Better Underground CavesMinecraft data pack for 1.21.11
Optimize the original cave terrain and add large underground cave terrain.
- Latest version
- v0.2+mod
- Minecraft
- 1.19.2 to 1.21.11
- Works with
- Quilt, NeoForge, Forge, Fabric
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 98.8k
- Updated
- 8 mo ago
- Available on
- Modrinth
Our hostingHost Better Underground Caves servers
Deploy a server with Better Underground Caves already added to the world, on hardware built for it.
- 1.21.11
- Data pack
- Quilt
- NeoForge
- Forge
- One click install
- Version matched
- Automatic backups
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version Better Underground Caves declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.11 | Data pack, Quilt, NeoForge, Forge, Fabric | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Data pack, Quilt, NeoForge, Forge, Fabric | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Data pack, Quilt, NeoForge, Forge, Fabric | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Data pack, Fabric, Forge, NeoForge, Quilt | 21+ | declared | 8 Aug 2024 |
| 1.21 | Data pack, Quilt, NeoForge, Forge, Fabric | 21+ | declared | 13 Jun 2024 |
| 1.20.6 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 29 Apr 2024 |
| 1.20.5 | Fabric, Quilt, NeoForge, Forge, Data pack | 21+ | declared | 23 Apr 2024 |
| 1.20.4 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 7 Dec 2023 |
| 1.20.3 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 4 Dec 2023 |
| 1.20.2 | NeoForge, Quilt, Forge, Fabric, Data pack | 17+ | declared | 20 Sept 2023 |
| 1.20.1 | Data pack, Quilt, NeoForge, Forge, Fabric | 17+ | declared | 12 Jun 2023 |
| 1.20 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 2 Jun 2023 |
| 1.19.4 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 14 Mar 2023 |
| 1.19.3 | Fabric, Quilt, NeoForge, Forge, Data pack | 17+ | declared | 7 Dec 2022 |
| 1.19.2 | NeoForge, Fabric, Data pack, Forge, Quilt | 17+ | declared | 5 Aug 2022 |
Download
From Better Underground Caves’s own host. Nothing is re-hosted here.
For Minecraft 1.21.11
Choose the loader you use before downloading.
- Choose file on publisher ↗
Fabric, Forge, NeoForge, Quilt
v0.2+mod · 3 Mar 2026
Multiple loaders are listed; verify the file before downloading.
- Get release
Loader not listed
v0.2 · 3 Mar 2026 · Better_underground_caves.zip
Most recently published release
better-underground-caves-v0.2.jar · 53 KB · for 1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +17 more · Fabric, Forge, NeoForge, Quilt
a76650e94c2f…Older versions3Hide older versions
- v0.23 Mar 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +17 more11 KB663 downloads
fc74a1433a97…Get - 0.1+mod24 Aug 20251.21.8, 1.21.7, 1.21.6, 1.21.5, 1.21.4 +14 more0.1 MB93.0k downloads
fe79b984c8f0…Choose file on publisher ↗ - 0.122 Aug 20251.21.8, 1.21.7, 1.21.6, 1.21.5, 1.21.4 +14 more29 KB767 downloads
f1823e60036e…Get
Frequently asked
Does Better Underground Caves work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version Better Underground Caves declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Better Underground Caves support?
Everything the author has declared, from 1.19.2 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Better Underground Caves on the client or the server?
The server only. Players join with an ordinary Minecraft client and install nothing.
What licence is Better Underground Caves under?
LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Better Underground Caves?
Data packs install per world: put the downloaded file in that world's datapacks folder and run /reload, or add it when creating the world. No loader is involved. On a server, the world folder lives next to the server jar.
Where do I download Better Underground Caves safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .