How to Find a Dungeon (Monster Room) in Minecraft

Guide Java Bedrock

Quick answer: Dungeons - officially monster rooms - are small cobblestone rooms underground with a zombie, skeleton or spider spawner and up to two loot chests. Saddles, name tags and music discs hide inside.

What you need

Torches (disabling the spawner)
Weapon and armor
Empty inventory slots for loot

Step by step

Dig anywhere in the Overworld: monster rooms generate underground in every biome - each chunk makes fourteen generation attempts between Y 0-320 and Y -58 to -1.
Listen for mob echoes: a chorus of the same mob sounds from one spot underground usually means a spawner - zombie, skeleton or spider.
Cave into them: monster rooms always generate connected to carver caves, canyons, mineshafts and strongholds, so spelunking finds them faster than branch mining.
Spot the mossy cobblestone: the floor mixes cobblestone with 75% mossy cobblestone - natural mossy cobble only appears here and in a handful of structures.
Secure the spawner: torch the spawner (or stand within range so nothing spawns) before looting - the room keeps producing mobs until you disable it.
Loot the chests: up to two chests hold saddles, buckets, gunpowder, string, bread, iron ingots, redstone, golden apples and the 13 and cat music discs - some of the few disc sources in the game.
Convert it to a farm: a zombie or skeleton spawner plus water streams makes a classic XP and drops farm - never break a spawner you might want later.
Mind the quirks: rarely a room generates with no chest or even no spawner, and sometimes the two chests merge into a double chest.

Java vs Bedrock

Generation and loot match across editions. In Bedrock, zombie spawners can also produce zombie villagers (5% of spawns), handy for curing setups.

Versions: One of the oldest generated features in Minecraft - added in Infdev on June 25, 2010, with saddles and golden apples in the chests from day one and music discs arriving in Alpha.

Frequently asked questions

Where do dungeons spawn in Minecraft?

Underground in every Overworld biome, always connected to carver caves, canyons, mineshafts or strongholds - each chunk gets fourteen generation attempts. Listen for repeated mob sounds while caving.

What loot is in dungeon chests in Minecraft?

Saddles, buckets, gunpowder, string, wheat, bread, iron ingots, redstone, golden apples and the 13 and cat music discs. A room holds up to two chests, occasionally merged into a double chest.

What spawner types do dungeons have?

Zombie spawners are the most common at 50%, with skeleton and spider spawners at 25% each. Zombie and skeleton rooms make excellent XP farms; spider rooms are awkward because spiders climb.