
Modrinth · Minecraft mod
Deep Underground (Mining Dimension)
Adds a 256-block tall deepslate cave dimension
Quick answer
Which Deep Underground (Mining Dimension) release matches Fabric?
Deep Underground (Mining Dimension) 1.1.0 targets 1.21.1 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Deep Underground (Mining Dimension) required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Deep Underground (Mining Dimension) 1.1.0 need?
1.1.0 on Fabric. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Deep Underground (Mining Dimension) without breaking your instance.
Built for Deep Underground (Mining Dimension) 1.1.0 on Fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.1.0. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.1.0. It opens that exact file at the source.
About this project
What does Deep Underground (Mining Dimension) add?
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.
Project description from Modrinth.
Pick your setup
Deep Underground (Mining Dimension) by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Deep Underground (Mining Dimension) versions and loaders
1.1.0
deep_underground-1.1.0.jar
25 Mar 2026
1.0.2
deep_underground-1.0.2.jar
5 Nov 2025
1.0.1
deep_underground-1.0.1.jar
2 Nov 2025
1.0.0
deep_underground-1.0.0.jar
31 May 2025
0.1.0a
deep_underground-0.1.0a.jar
27 May 2025
Looking for an older file? The official Modrinth project page is in Resources.