Trial Chamber Seeds

A trial chamber within 150 blocks of spawn.

Trial chambers are the underground copper-and-tuff structures from 1.21, full of trial spawners and vaults. They are also where you get the heavy core for the mace.

Trial chambers are common, so the bar here is high: every seed has one within 150 blocks of spawn.

Java 26.3 seeds

Trial chamber matched about 1 in 5 random seeds we checked; these are the 9 with the best seed score.

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#13424303924339163092A · 79
Spawn in Plains at 48, 0
- Trial Chambers 113 blocks from spawn at 64, 112
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#26654703526370592550A · 78
Spawn in Savanna at -32, 48
- Trial Chambers 97 blocks from spawn at 64, 64
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#3-3753919076241091417A · 78
Spawn in Savanna at 0, 0
- Trial Chambers 132 blocks from spawn at 32, 128
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#4-1544361232077033468A · 76
Spawn in Plains at -32, 0
- Trial Chambers 93 blocks from spawn at 48, 48
Open map Check
#53754465706866152520A · 74
Spawn in Forest at -16, -16
- Trial Chambers 82 blocks from spawn at 64, 0
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#6-2898801240752967912A · 73
Spawn in Taiga at 64, -96
- Trial Chambers 132 blocks from spawn at 32, 32
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#71632244081064680527A · 73
Spawn in Jungle at 0, 0
- Trial Chambers 143 blocks from spawn at 128, 64
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#88216711054686435746A · 72
Spawn in Forest at 0, 0
- Trial Chambers 66 blocks from spawn at 64, 16
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#91861648548798752125A · 72
Spawn in Taiga at 160, -208
- Trial Chambers 129 blocks from spawn at 272, -272
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Bedrock 26.3 seeds

Trial chamber matched about 1 in 6 random seeds we checked; these are the 9 with the best seed score.

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#1-2113785606A · 84
Spawn in Plains at 0, 16 (estimated)
- Trial Chambers 137 blocks from spawn at 48, 144
Open map Check
#2-298864503A · 80
Spawn in Dappled Forest at 16, 192 (estimated)
- Trial Chambers 128 blocks from spawn at 16, 320
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#3-49056235A · 79
Spawn in Plains at 0, 32 (estimated)
- Trial Chambers 101 blocks from spawn at 32, 128
Open map Check
#4-1494915603A · 79
Spawn in Plains at 64, -64 (estimated)
- Trial Chambers 115 blocks from spawn at 0, 32
Open map Check
#51272303729A · 78
Spawn in Forest at 0, 0 (estimated)
- Trial Chambers 101 blocks from spawn at 32, 96
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#6-273592212A · 78
Spawn in Old Growth Birch Forest at 0, 32 (estimated)
- Trial Chambers 112 blocks from spawn at 112, 32
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#7-1219738913A · 78
Spawn in Birch Forest at -16, 64 (estimated)
- Trial Chambers 125 blocks from spawn at 64, 160
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#81258871911A · 77
Spawn in Taiga at 0, 0 (estimated)
- Trial Chambers 101 blocks from spawn at 32, 96
Open map Check
#9-2123639336A · 76
Spawn in Forest at 48, 32 (estimated)
- Trial Chambers 136 blocks from spawn at 144, 128
Open map Check

First things to do

Trial chambers generate between Y −40 and Y −20.
Bring trial keys back to the vaults; ominous keys from ominous trials give better loot.
Breezes deflect arrows, so bring a sword or a mace.

How these seeds were found

We ran our seed finder over random seeds with this exact quick pick, using the same world generator as the seed map, and kept the matches with the highest seed score. Every coordinate on this page comes from that check, for 26.3. Older or newer versions can place things differently, so check a seed on the map for your version. Last updated 2026-11-02.

Questions

Is the distance to the entrance?

It is to the structure's start position, which is near its middle. The chambers are big, so dig down at the coordinates and you will hit corridors.