Fill an Area with Lava
Flood a region with lava source blocks
✅ Verified for Java 26.2 · Bedrock 26.32 — checked June 2026Fills a 6×6 area at your feet with lava source blocks — instant moat, trap floor, or mob incinerator. Every block is a source, so it won't drain. Be standing somewhere safe when you run it, and keep a fire resistance potion handy.
/fill ~ ~ ~ ~5 ~ ~5 lava24 characters
- Java: yes
- Bedrock: yes
- Command block: yes
- Needs cheats / OP: yes
How to use
- Open chat (T on Java, / on Bedrock).
- Move to one corner of the area (or set absolute coordinates).
- Paste the command and press Enter.
- The region floods with lava instantly — mind your feet.
Related commands
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Fill an Area with Water
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Replace One Block Type with Another
Swap every block of one type for another in a region
Clone (Copy) a Structure
Copy a region of blocks and paste it somewhere else
Fill an Area with TNT
Pack a region with TNT blocks ready to detonate
Clear a Region with Air
Delete all blocks in a large area quickly