Move the cursor over the map
Find every ancient city in your seed
Find the ancient cities in your world. Enter your seed and the map marks each one, deep under the deep dark where the wardens live. Click any marker for its exact chunk and a teleport command you can paste straight into chat.
Ancient cities generate only in the deep dark biome, far underground around Y=-52. The deep dark itself forms under mountainous terrain, so the map marks the surface position above each city.
Why go to a ancient city
They hold the only naturally generating echo shards (for the recovery compass), enchanted golden apples, diamond gear and music discs. They also hold sculk shriekers and a warden, so bring wool to muffle your steps.
Frequently asked questions
How do I find a ancient city in Minecraft?
Enter your world seed and every ancient city in range is marked on the map. Click a marker to see its chunk and copy a
/tp command straight to it. Turn the biome layer on to see the terrain around it before you set off.Where do ancient citys generate?
Ancient cities generate only in the deep dark biome, far underground around Y=-52. The deep dark itself forms under mountainous terrain, so the map marks the surface position above each city.
What is inside a ancient city?
They hold the only naturally generating echo shards (for the recovery compass), enchanted golden apples, diamond gear and music discs. They also hold sculk shriekers and a warden, so bring wool to muffle your steps.
How deep is an ancient city?
They centre around Y=-52, near the bottom of the world. Dig straight down from the marker and you will hit the deep dark well before bedrock.
Will a warden spawn?
Only if you set off enough sculk shriekers. Three activations summon one. Walk on wool, avoid sprinting, and you can loot a city without ever meeting it.
Does this work for Minecraft Bedrock Edition?
Yes. Use the Java / Bedrock toggle above the map. Be aware the two editions are not interchangeable: since 1.18 they share terrain and biome generation, so the landscape for a given seed looks nearly the same, but structures like villages and strongholds use edition-specific placement and end up in different places. Bedrock also uses 32-bit seeds where Java uses 64-bit.
Is my seed sent to a server?
No. The whole map is computed in your browser with JavaScript. Your seed never leaves your device, there is no account, and no download is necessary.
Can I share a link to what I am looking at?
Yes. The address bar updates as you pan and zoom, so you can copy the URL at any time, or press Copy link. Anyone opening it lands on the same seed at the same position and zoom.
What do the grid lines mean?
The fine grid is chunks (16x16 blocks), which is the unit slime chunks and mob spawning work in. The heavier grid is regions (512x512 blocks, or 32x32 chunks), which is the unit Minecraft uses when deciding where to place structures. Brighter lines through the middle mark the world origin at X=0, Z=0.