Find every Ancient City on your Minecraft seed — Java 26.2 & Bedrock 1.26.30, any seed, free, no sign-up.
Quick answer: Ancient Cities generate deep underground in the Deep Dark biome, around Y ‒51, only in the Overworld — rare and dangerous. This finder locates them at 93% accuracy on Java and 81% on Bedrock.
Ancient Cities spawn only in the Deep Dark biome, deep underground around Y ‒51 in the Overworld. The Deep Dark forms beneath mountainous terrain, so cities sit far below the surface — you usually dig down or follow a cave system to reach one.
Enter your seed and the finder marks every Ancient City. Open a marker for its coordinates, then tunnel down to roughly Y ‒51 at that X/Z. Approach carefully — setting off sculk shriekers can summon the Warden.
They are rare — a typical world has only a handful within a few thousand blocks of spawn. The Deep Dark’s terrain is harder to predict than a surface structure, which is why the published figure is 93% on Java and 81% on Bedrock rather than near-exact.
Yes — both editions, Minecraft 26.2 (Java) and 1.26.30 (Bedrock). Ancient Cities were added in 1.19 on both. Markers read 93% on Java and 81% on Bedrock.
| Generates in | Spacing / separation | Version added | Finder accuracy |
|---|---|---|---|
| Deep Dark biome, around Y ‒51 (Overworld, deep underground) | Rare — typically a few thousand blocks apart | Java 1.19 · Bedrock 1.19 | Java 93% · Bedrock 81% |
What's inside: Sculk, the Warden (only if triggered), and reward chests with Echo Shards, Swift Sneak books and enchanted gear