Minecraft 1.21 Trial Chambers Seeds

On Java 1.21.11 we tried 1,800 seeds, and 552 had a trial chamber within 200 blocks of spawn. The nearest sits 16 blocks away and the typical hit is about 31 blocks. The top seed starts on plains, so a clear approach lets you spot the chamber on the map and dig straight down.

1.21 trial chambers: 20 of 1,800 tested seeds · Java 1.21.11 · 2026-10-31

1. 1
   1017131725345994151S88/100

   Spawn in plains at X 64, Z 48

   • Trial Chambers right at spawn X 64, Z 32
   • Stronghold 1408 blocks
   • Village 224 blocks
   Open mapCopy seed
2. 2
   6132391530872109681S81/100

   Spawn in forest at X 64, Z -512

   • Trial Chambers right at spawn X 64, Z -496
   • Stronghold 2021 blocks
   • Village 858 blocks
   Open mapCopy seed
3. 3
   4878718937296692508S81/100

   Spawn in cherry grove at X 0, Z 0

   • Trial Chambers right at spawn X 0, Z 16
   • Stronghold 1786 blocks
   • Village 288 blocks
   Open mapCopy seed
4. 4
   -1530445315283614114A77/100

   Spawn in forest at X 0, Z 0

   • Trial Chambers right at spawn X 0, Z 16
   • Stronghold 1558 blocks
   • Village 745 blocks
   Open mapCopy seed
5. 5
   -3074666305419943128A71/100

   Spawn in forest at X 0, Z 16

   • Trial Chambers right at spawn X 16, Z 0
   • Stronghold 1981 blocks
   • Village 890 blocks
   Open mapCopy seed
6. 6
   -7288258139345493304S85/100

   Spawn in forest at X 0, Z 0

   • Trial Chambers 32 blocks X 32, Z 0
   • Stronghold 1553 blocks
   • Village 852 blocks
   Open mapCopy seed
7. 7
   1816008231563665736S84/100

   Spawn in forest at X -496, Z -256

   • Trial Chambers 32 blocks X -496, Z -288
   • Stronghold 1305 blocks
   • Village 179 blocks
   Open mapCopy seed
8. 8
   957908410662854101S84/100

   Spawn in forest at X 0, Z 48

   • Trial Chambers 32 blocks X 0, Z 16
   • Stronghold 1828 blocks
   • Village 276 blocks
   Open mapCopy seed
9. 9
   968299874910199128S83/100

   Spawn in plains at X 16, Z 0

   • Trial Chambers 32 blocks X 16, Z 32
   • Stronghold 1788 blocks
   • Village 471 blocks
   Open mapCopy seed
10. 10
    -1615581108945159145S89/100

    Spawn in windswept savanna at X 128, Z -512

    • Trial Chambers 36 blocks X 112, Z -480
    • Stronghold 1016 blocks
    • Village 198 blocks
    Open mapCopy seed
11. 11
    -1624087187944075501S81/100

    Spawn in snowy taiga at X 48, Z 32

    • Trial Chambers 32 blocks X 80, Z 32
    • Stronghold 1940 blocks
    • Village 288 blocks
    Open mapCopy seed
12. 12
    -2481454788429695657S85/100

    Spawn in jungle at X 32, Z -32

    • Trial Chambers 36 blocks X 48, Z 0
    • Stronghold 1502 blocks
    • Village 334 blocks
    Open mapCopy seed
13. 13
    -1351536386399060421A77/100

    Spawn in plains at X -368, Z -896

    • Trial Chambers 36 blocks X -384, Z -864
    • Stronghold 1452 blocks
    • Village 1858 blocks
    Open mapCopy seed
14. 14
    3783130594475962929A68/100

    Spawn in badlands at X 0, Z 0

    • Trial Chambers 32 blocks X 32, Z 0
    • Stronghold 1853 blocks
    • Village 288 blocks
    Open mapCopy seed
15. 15
    5347874304968116384A72/100

    Spawn in savanna at X 0, Z 0

    • Trial Chambers 36 blocks X 32, Z 16
    • Stronghold 1540 blocks
    • Village 336 blocks
    Open mapCopy seed
16. 16
    -2203532232766357767A71/100

    Spawn in snowy plains at X 16, Z 0

    • Trial Chambers 36 blocks X 32, Z 32
    • Stronghold 1391 blocks
    • Village 276 blocks
    Open mapCopy seed
17. 17
    5593890104703315762B62/100

    Spawn in jungle at X 0, Z -16

    • Trial Chambers 32 blocks X 0, Z 16
    • Stronghold 1712 blocks
    • Village 1165 blocks
    Open mapCopy seed
18. 18
    -3895907138919593858S87/100

    Spawn in forest at X 0, Z 0

    • Trial Chambers 45 blocks X 32, Z 32
    • Stronghold 1587 blocks
    • Village 375 blocks
    Open mapCopy seed
19. 19
    -632346686186166654A69/100

    Spawn in plains at X -256, Z 64

    • Trial Chambers 36 blocks X -288, Z 80
    • Stronghold 1232 blocks
    • Village 1007 blocks
    Open mapCopy seed
20. 20
    2640791020118172580S80/100

    Spawn in windswept savanna at X 0, Z 0

    • Trial Chambers 45 blocks X 32, Z 32
    • Stronghold 1825 blocks
    • Village 250 blocks
    Open mapCopy seed

Fighting breezes and bogged in a Java chamber

The chambers were the headline of Java 1.21, and a seed with one nearly under spawn lets you jump into the update. Expect copper bulbs, tuff brick halls and several trial spawners.

The mobs you face rotate by room:

• Breeze: jumps around and shoots wind charges that push you back.
• Bogged: a swamp skeleton with poison arrows.
• Melee rooms: zombies, husks, baby zombies, spiders and silverfish.

Bring milk to cure poison, a shield for arrows and a bow for breezes that hover. Breezes shoot from a distance, so break line of sight with a pillar or doorway when you need to reload.

When a wave ends, the spawner drops a trial key. Open the vault at once, because loot appears only when you use the key.

Keep a stack of cobblestone to wall off corridors and rest inside a protected side room.

Using the plains start to prepare

The surface above a chamber is usually ordinary terrain, so plains give you a wide space to plan. Set up a small farm and a sleeping area first, then dig down from a chosen spot.

Java players have an extra tool: with cheats enabled, the locate command can confirm the chamber. Without cheats, use the seed map here.

Before you enter:

• Craft iron or better armour and a shield.
• Pack at least two stacks of food.
• Take a pickaxe, torches and a water bucket.

Trial chambers have chests with arrows, copper and sometimes enchanted books. Open them on your way out so you do not drag loot into a fight.

Return trips are short on this seed. With the nearest chamber only 16 blocks away from spawn, you can fight a wave, run home, restock and repeat in minutes.

Read how the seed hunter picks and rates seeds.

FAQ