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Deep Underground (Mining Dimension)

Deep Underground (Mining Dimension)

by Bluestar_ • Downloads: 0 • Followers: 0
Description
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Changelog
Versions

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.

A screenshot of the Deep Underground portal, in the Frozen Cave biome that only exists in the new dimension.

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.

All Versions

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Name Game version Platforms Published Downloads Actions
1.21.1
Fabric
7mo ago 1
1.21.1
Fabric
last yr. 1
1.21.1
Fabric
last yr. 1
1.21.1
Fabric
last yr. 1
1.21.1
Fabric
last yr. 1
[1.1.0] Deep Underground 1.1.0 by Bluestar_ on Mar 25, 2026
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This release polishes up the dimension a bit to work more as a standalone dimension. Two structures are planned for the next major version!
## Additions
  • Added cyclite ore, blocks and item
  • New coal equivalent that generates super rarely as an ore below Y64, or as large geodes made of the block
  • One cyclite can smelt 4 items, a block smelts 16
  • Added hadeite, a dark desaturated purple clay equivalent
  • Only generates in Deep Dripstone Caves
  • Has brick and chiseled brick block variants
  • Added ice pillars to the Frozen Cave biome to make it less dull

## Changes and Fixes
  • Stone blobs are much less frequent in the dimension now
  • Deepslate spikes generate less often (fixes "detected setblock in a far chunk" for the most part)
  • Diamond ore no longer generates below Y48 (makes room for Cyclite)
  • Frozen Cave biomes no longer have canyon carvers in them
  • Improved textures for:
  • Raw Cerulium and Viridium
  • Cerulium and Viridium armor items
  • Cerulium and Viridium armor player models
[1.0.2] Deep Underground 1.0.2 by Bluestar_ on Nov 05, 2025
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  • Fixed depthbound steel tools having 3200 durability (like Cerulium) instead of 8000
[1.0.1] Deep Underground 1.0.1 by Bluestar_ on Nov 02, 2025
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  • Removed red onyx
  • Cerulium now has a more cerulean-colored look
  • Viridium tool textures now have a properly green outline (rather than blue-green)
  • Depthbound scrap texture lightened a bit
  • Portal is now transparent and properly animated
  • Portal ambient and break sounds updated

  • Added the missing Depthbound Steel tools (axe, hoe, pickaxe, shovel)
  • Portal can now only be lit in the Overworld and Deep Underground
[1.0.0] Deep Underground 1.0.0 by Bluestar_ on May 31, 2025
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  • Added Continuity support
  • Tidied up code and added a proper mod icon
Initial release
Deep Underground (Mining Dimension) Icon
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