UltraTerraForged - Alex's Caves Fix

⛏ Restore the world beneath your feet

Let Alex's Caves generate properly in UltraTerraForged worlds.

This focused compatibility mod addresses conflicts between UltraTerraForged and the unofficial Alex's Caves NeoForge port. It restores cave biome placement and native underground chambers while protecting those areas from incompatible additional carving.

🦇 Six cave biomes · 🪨 Protected chambers · 🧭 Better locating

⛏ What this mod restores

• Cave biome placement: Adapts Alex's Caves biome selection to UltraTerraForged's terrain.
• Underground chambers: Prevents a surface river-placement restriction from blocking native chambers.
• Carving protection: Protects Alex's Caves biomes against extra carving and decorative terrain writes.
• Better locating: Verifies /locateacbiome results against the active biome source and includes underground coordinates.

The fix covers Magnetic Caves, Primordial Caves, Toxic Caves, Abyssal Chasm, Forlorn Hollows and Candy Cavity.

It preserves the original mod's chamber sizes and does not add new caves, biomes, mobs or structures.

🧭 Installation & setup

1. Install UltraTerraForged and the supported Alex's Caves NeoForge port with its required dependencies.
2. Place this compatibility mod in the mods folder on both client and server.
3. Create or explore an UltraTerraForged Overworld with Generate Structures enabled.
4. Generate new chunks to see the changes; previously generated areas are not rebuilt.

Operators can run /tfacfix status to inspect the active compatibility profile. To look for specific caves, try /locateacbiome primordial_caves or /locateacbiome magnetic_caves.

The file config/tfacfix-common.toml allows individual compatibility fixes to be enabled or disabled. Restart after changing world-generation settings.

📦 Requirements

• Minecraft: 1.21.1
• Mod loader: NeoForge 21.1.219+ (21.1.x)
• Java: 21
• Required: UltraTerraForged 1.0.2+1.21.1
• Required: Alex's Caves unofficial NeoForge port 2.0.10 by Raguto, with its Citadel port dependency

Compatibility notes: The fix activates in supported UltraTerraForged Overworlds; vanilla worlds and other dimensions retain their normal biome sampling. /locateacbiome identifies biome coordinates, not necessarily an open or safe cavern—solid rock can still separate underground chambers.

🔗 Documentation & links

GitHub & documentation · Changelog · Report a bug

Independent compatibility add-on by Towns & Kingdoms. GPL-3.0-only. Original mods and their assets belong to their respective creators.

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Have a question, an idea, or something cool to share? Join the Towns & Kingdoms Discord. For bugs, please use GitHub Issues so logs and reproduction steps are easy to track.

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