Collapsing Caves
by CCDelic
With Collapsing Caves, dirt, stone and other blocks can come down from a ceiling as a cave-in, triggered naturally underground below sea level.
What it does
Cave-ins start on their own in the Overworld below sea level, and they can only begin underground, where the sky cannot be seen. A warning lasts about three seconds, with the screen shaking and a deep rumble, and the mod gives players time to move to a safe position before blocks fall. Once the ceiling starts to give way, blocks fall in groups, hurt players and mobs, and leave dust that produces a sound where they land. The collapse is anchored at the block that was broken, and it can follow the player as it spreads.
Each block break carries a 1-in-512 chance of setting off a collapse, and no collapse can fire during the first 20 minutes after a player joins. A small buffer is added before a cave-in begins after it is triggered. Configuration options tune this logic so players are not griefed or burdened by frequent collapses. Installation covers the server and each player's game. It requires Fabric API and is published for Fabric, Forge and NeoForge, with files for 1.20.1, 1.21.1, 26.1.2, 26.2 and 26.3.
Key features
Natural cave-ins
Cave-ins happen on their own while mining, with varying magnitudes that give the underground a disaster element.
Warning before collapse
Screen shake and a deep rumble give about three seconds of warning before blocks fall, so players can step away.
Block types
Stone, dirt and clay blocks have their own variants, and newer releases add sulfur and cinnabar for the game.
Configurable frequency
Options control how often cave-ins start, with rules that keep them from firing too often or too early after logging in.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
Natural Cataclysm is a server-required mod with a client-optional side, published for Fabric, Forge, NeoForge and Quilt across 1.21 – 26.2, under All rights reserved. Extreme Natural Disasters is server-side only, open source no, and covers 1.20.1 – 26.3 on Fabric, Forge and NeoForge. Sulfur Caves Backport is client and server, with 1.20.1 – 26.1.2 files for the same three loaders.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Collapsing Caves | Fabric, Forge and NeoForge | 1.20.1 – 26.3 | Client and server | 2026-09-22 |
| Natural Cataclysm | Fabric, Forge, NeoForge and Quilt | 1.21 – 26.2 | Server required, client optional | 2025-10-26 |
| Extreme Natural Disasters | Fabric, Forge and NeoForge | 1.20.1 – 26.3 | Server-side only | 2026-10-01 |
| Sulfur Caves Backport | Fabric, Forge and NeoForge | 1.20.1 – 26.1.2 | Client and server | 2026-09-17 |
Questions
Does Collapsing Caves need Fabric API?
Does the server need Collapsing Caves?
Why does a cave-in not start near the surface?
In the catalog
Collapsing Caves is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 8,071 mods support Minecraft 26.3.
More from CCDelic
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What the author says
New versions of this mod (v1.6+) are for Fabric and NeoForge only. I have zero issue with this mod being in modpacks and I don't need to be credited.
Official listing
- Modrinth page
- modrinth.com/mod/collapsing-caves
- Owner
- CCDelic
- Published
- 2026-03-20
- Updated on Modrinth
- 2026-09-22
- Facts verified
- 2026-10-15