Minecraft Trial Chamber Finder
Find every Trial Chamber on your Minecraft seed — Java 26.2 & Bedrock 1.26.40, any seed, free, no sign-up.
Quick answer: Trial Chambers generate underground in the deepslate layer of the Overworld, in any biome, and were added in 1.21. This finder marks them at 99% accuracy on Java and Bedrock.
Where do Trial Chambers generate?
Trial Chambers generate underground in the deepslate layer of the Overworld — roughly between Y ‒40 and Y 30 — and can appear beneath any biome. They sit deep enough that you usually reach them by digging down or following a cave system.
How do I find a Trial Chamber from a seed?
Enter your seed and the finder marks every Trial Chamber. Open a marker for coordinates, dig down to the deepslate layer at that X/Z, and you will reach the chamber. Bring Trial Keys to open the reward vaults.
What’s inside a Trial Chamber?
Trial spawners that summon waves of mobs, tougher ominous variants, and vaults you unlock with Trial Keys. Rewards include the Heavy Core used to craft the Mace, plus enchanted gear, emeralds and more.
Does the finder work on Bedrock? Which version added Trial Chambers?
Yes — both editions, Minecraft 26.2 (Java) and 1.26.40 (Bedrock). Trial Chambers arrived in 1.21 on both. Markers read 99% accurate on Java and Bedrock.
What loot is in trial chamber vaults?
Vaults hold the best loot in the chamber, and they are the reason to bring Trial Keys: a vault is opened with a key rather than looted like a chest, and it pays out once per player, so a chamber is worth visiting with friends. There are two tiers — ordinary vaults, and ominous vaults that only unlock with an Ominous Trial Key earned from an ominous trial — and the ominous table is the better one. Diamonds turn up in both; the exact per-vault chance is on the Diamond Finder, and the likeliest items overall are in the loot highlights below.
Trial Chamber at a glance
| Generates in | Spacing / separation | Version added | Finder accuracy |
|---|---|---|---|
| Underground in the deepslate layer (any Overworld biome) | Fairly common underground — usually within a few hundred blocks | Java 1.21 · Bedrock 1.21 | 99% (Java & Bedrock) |
What's inside: Trial spawners, vaults opened with Trial Keys, Breeze and Bogged mobs, and rewards including the Heavy Core for the Mace
Marker precision
| Java | Exact centre — verified July 2026 |
|---|---|
| Bedrock | Area estimate — the marker points into the structure's area |
What it is built from
Built from 40 different blocks — 12 of them are listed here.
