ModsFinder

Classic Caves

by inboundbark

Classic Caves restores older underground generation in 1.7.10 and 1.8.9 worlds through a set of world generation tweaks.

ForgeLegacy FabricServer-side onlyMIT LicenseOpen source1.7.10 – 1.8.9

What it does

Classic Caves reverts the cave changes made in the 1.7 series, returning underground terrain to a form close to how it looked before those changes. Caves spawn more often, mineshafts appear with a higher chance, and ravines regain their former curvature. Dungeons can now generate at a lower maximum height, so they become more common in the upper layers of stone.

Because it only alters world generation, the mod runs on the server alone. Players join without installing anything, and the changes apply to chunks generated after the mod is active. The mod requires UniMixins, which must be installed alongside it. Builds cover 1.7.10 and 1.8.9, with Forge and Legacy Fabric files for each version.

Key features

  1. Classic cave layout

    Cave networks are rebuilt to match the shape they had before the 1.7 changes, so underground exploration feels closer to older worlds.

  2. More frequent caves

    The chance for caves to appear is raised, so a generated area holds more open underground space.

  3. Higher mineshaft chance

    Mineshafts generate more often than in vanilla, which leaves more abandoned tunnels to find.

  4. Ravine curvature

    Ravines are shaped with the older curvature, changing how deep cuts through the stone run.

Compatibility

Latest build for each game version and loader.

1.8.9Not available1.8.9-v1.0.2-fabric
1.7.101.7.10-v1.0.2-forgeNot available
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

UniMixinsA Mixin loader designed for maximum compatibility.
Required

How it compares

Full comparison

SwissCaves is a Forge-only option for 1.7.10 that is server-side only and open source under the MIT License, so it covers the same version with fewer loaders. Better Underground Caves targets 1.19.2 – 1.21.11 on Fabric, Forge, NeoForge and Quilt, and it is not open source; it is server required with client optional. Classic Caves is the choice for a 1.7.10 or 1.8.9 world on Forge or Legacy Fabric.

ModLoadersGame versionsEnvironmentUpdated
Classic CavesForge and Legacy Fabric1.7.10 – 1.8.9Server-side only2026-04-11
SwissCavesForge1.7.10Server-side only2024-10-07
Better Underground CavesFabric, Forge, NeoForge and Quilt1.19.2 – 1.21.11Server required, client optional2026-03-03

Questions

Does Classic Caves need to be installed on the client?

No. Players join without it, since only the server has to run the mod. Only the server needs it installed.

What does Classic Caves require?

UniMixins is required. It has to be installed next to Classic Caves on the server.

Which loaders does Classic Caves support?

Forge and Legacy Fabric. Forge files exist for 1.7.10 and 1.8.9, and Legacy Fabric files for 1.8.9.

In the catalog

Classic Caves is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 955 mods support Minecraft 1.8.9.

World generation mods8,515Forge modsMods for 1.8.9955

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What the author says

Reverses release 1.7.2's cave changes, bringing them back to their former glory. All this makes the underground nearly identical to 1.6.4.
inboundbark, on the Modrinth page

Official listing

Owner
inboundbark
Published
2025-02-03
Updated on Modrinth
2026-04-11
Facts verified
2026-10-15

Tags

World generation
Open on ModrinthCompare