SafeNeatherTunnel
A simple configurable mod that automatically blocks off lava around you, made to make tunneling in the nether safer.
⬇ Download on ModrinthA simple, easy to understand, client-side mod that automatically places a block in nearby lava made to make tunneling in the Nether safer, but can have other applications.
Commands
/lavablocker enable - Enables LavaBlocker.
/lavablocker disable - Disables LavaBlocker.
/lavablocker onlyBlockSource <true|false> - If true, only source lava blocks will be removed.
/lavablocker radius <1-16> - Sets how far around the player to check for lava.
/lavablocker checkInterval <1-10> - How often (in ticks) to check for lava.
/lavablocker maxBlocksPerCheck <1-10> - Maximum number of blocks placed per check.
/lavablocker replacementBlock <block> - Sets the block type used to block lava.
/lavablocker help - Shows this list of commands.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 1.21.5, 1.21.6
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as lava-blocker-1.21.4+.jar — drop this file into the mods folder
- Download size: 20 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.