Find every Trial Chamber on your Minecraft seed — Java 26.2 & Bedrock 1.26.30, 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.
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.
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.
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.
Yes — both editions, Minecraft 26.2 (Java) and 1.26.30 (Bedrock). Trial Chambers arrived in 1.21 on both. Markers read 99% accurate on Java and Bedrock.
| 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