Deep-Retrograde

Backports Minecraft 1.21.1 underground generation to 1.12.2 — deepslate caves, stalactites, lava sea, deep ores, and 1.21.1-style mountain peaks via CubicChunks.

File Details
DownloadInstall

Deep-Retrograde-1.1.0.jar

ByRhineland905
  • B
  • May 30, 2026
  • 335.86 KB
  • 27
  • 1.12.2
  • Forge

File Name

Deep-Retrograde-1.1.0.jar

Supported Versions

  • 1.12.2

Curse Maven Snippet

Forge

implementation fg.deobf("curse.maven:deep-retrograde-1558044:8167034")
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🌍 World Generation Overhaul

Dungeon (Y = −64 to 0)

New Unified Fill Pass (fillAndReplace) The three separate phases — fillStone, replaceWithDeepslate, and generateBedrock — have been merged into a single pass. Each block is now written only once instead of twice, roughly halving the number of lighting-engine updates and reducing FPS drops during chunk generation.

Stalagmites and Stalactites (generateSpeleothems)

After cave carving, dripstone formations made of dripstone_block are generated inside air cavities:

Stalagmites (floor → upward): 1–5 blocks tall, ~40% chance per probe. Stalactites (ceiling → downward): 1–3 blocks tall, ~35% chance per probe. Generated only above the lava level (Y > −50). Uses 8 probe columns per cube to search for suitable placement locations.

Surface Terrain (Y > 64) — NEW

Mountains Inspired by Minecraft 1.21.1 (generateMountainTerrain) A mountain terrain layer is added on top of the vanilla landscape, using four separate noise generators to create more natural and varied mountain formations.