About Deep Underground (Mining Dimension)
From ModrinthAdds a 256-block tall deepslate cave dimension
Overview
Deep Underground adds a simple 256-block tall mining dimension. It has three biomes: Deep Cave, Deep Dripstone Cave and Frozen Cave. The dimension has boosted ore generation rates, boosted mob spawn rates and has three unique stone types: Black Granite, Grimslate, and Schist.
To create the portal, craft at least 10 framed polished blackstone blocks, place them in a Nether portal shape and light it with a lava bucket.
The dimension is very dark, and coal doesn't generate. However, additional ores and structures can easily be added with external datapacks.
When mining deeper down into the dimension, Viridium and Cerulium can be found, which can be crafted into armor and tools. Cerulium can also be used to make Depthbound Steel which is obtained by leaving an Inert Depthbound Block below Y=24 in the dimension. After 1.1.0, Cyclite (a furnace fuel) can rarely generate as an ore, or be found in rare geodes.
Compatibility
The mod has biome icons for compatibility with EMI Ores and Continuity support for the framed polished blackstone block. A future update will add proper biome tags.
Can I Use This in a Modpack?
Yes! I actually created this mod for use in a modpack after discovering there wasn't already a similar mod on this version.
Highlights
From source dataGame versions
Built for Minecraft 1.21.1.
Loaders
Runs on Fabric.
Footprint
Rated a light load on a server.
Deep Underground (Mining Dimension) on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- Fabric
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.1.0, released 2026-03-25
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Fabric | 1.21.1 | 1.21.1 |
From 5 recorded builds of Deep Underground (Mining Dimension).
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.1.0 | 2026-03-25 | 1.21.1 | Fabric |
| 1.0.2 | 2025-11-05 | 1.21.1 | Fabric |
| 1.0.1 | 2025-11-02 | 1.21.1 | Fabric |
| 1.0.0 | 2025-05-31 | 1.21.1 | Fabric |
| 0.1.0a | 2025-05-27 | 1.21.1 | Fabric |
Dependencies
- Required: modrinth project P7dR8mSH (modrinth, not in our catalogue)
- Optional: modrinth project 1IjD5062 (modrinth, not in our catalogue)
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Deep Underground (Mining Dimension) on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogBuilding & decoration
Blocks, furniture, decorations and building tools.
Runs on your server
From source side supportModrinth lists Deep Underground (Mining Dimension) as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- Fabric
- Runs on
- Serverrequired on the server
- Game versions
- 1.21.1
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-02Open ↗
- ✓AuthorBluestar_, as published on Modrinth
- ✓LicenseMITFree
