Trial Chamber Finder

Trial chambers arrived in 1.21 with trial spawners, vaults and the breeze. Enter your seed, choose Bedrock or a Java version from 1.21 up, and the map marks every chamber near spawn, with coordinates listed underneath. That X and Z puts you above the chamber; the structure itself is underground, so plan to dig down or follow a cave.

Where chambers can go

Each 34×34-chunk region (544 blocks across) gets one attempt in the first 22 chunks of each axis, a 12-chunk minimum gap that keeps chambers further apart than villages. Almost any Overworld biome works; the deep dark is the only one excluded. The starting room is placed between Y −40 and Y −20, so chambers often cut into caves and aquifers, which can give you a ready-made way in.

Bedrock uses the same 34-chunk grid and also keeps chambers out of the deep dark. Because they were added in 1.21, the Java 1.20 – 1.20.6 option leaves the list empty.

Keys, vaults and the mace

Trial spawners release a wave of mobs scaled to the number of players nearby; clear it and the spawner drops a trial key. Keys open the regular vaults, one reward per player per vault. Walk in with Bad Omen, from drinking an ominous bottle, and it becomes Trial Omen: the spawners turn ominous and drop ominous trial keys for the ominous vaults, the only source of the heavy core. A heavy core plus a breeze rod crafts a mace.

Regular vaults also hand out diamonds, enchanted books, golden apples and the Bolt armor trim; ominous vaults add the Flow trim. The spawners themselves reset after a cooldown of about half an hour, so one chamber can be farmed for keys again and again.

Breezes and wind charges

Breezes come only from trial spawners, so a chamber is also where you collect breeze rods, which craft into wind charges as well as the mace handle. Projectiles bounce off them, so bring a sword, blocks to hide behind, and a shield for the wind charges they fire.

Frequently asked questions

Does it work for a Bedrock world?

Yes. Pick a Bedrock version in the list and the coordinates are worked out for Bedrock. Chambers sit on the same 34-chunk grid in both editions, but pick the edition your world was made in so the positions match.

Why does the list stay empty?

Check the version first: trial chambers need Java 1.21 or newer, so the 1.20 option never finds any. With 1.21 or later selected, a seed has far more chambers within 4,096 blocks than the twelve this list shows.

What command locates a trial chamber?

With cheats enabled, /locate structure minecraft:trial_chambers in Java or /locate structure trial_chambers in Bedrock.