Erosion

This article is about the terrain feature. For the noise parameter that controls terrain height, see World generation § Biomes.

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Erosion

Overworld erosion

Nether erosion

End erosion

Biomes	Overworld The Nether The End
Generates in existing chunks	No
Consists of	Top layer: Air Water Ice Lava Floor: Stone Orange Terracotta Netherrack End stone

Erosions, also known as basins, are rare terrain features that strip away the top layer of a biome's surface, leaving a one-block deep hole with a stony floor. They can generate in all three dimensions, and are intentional.^[1][2][3]

Erosions occur at the top-most layer of the terrain surface. The first layer is stripped away, and the secondary layer is too small to generate, causing the terrain below to generate at the surface. Erosions are completely random and extremely rare; they can consist of only one block, a few random blocks, or a massive area with rough borders.

In the Overworld, the floors of erosions almost always consist of stone. They expose ores such as coal ore, copper ore and iron ore. In badlands erosions, gold ore can also be seen. In badlands and variants, the floor is replaced by orange terracotta. Erosions in frozen oceans occur at the freeze layer and replace it with air, followed by ice or water below.

Erosions in The Nether replace the floor with netherrack. Nether erosions can expose ore such as nether gold ore and nether quartz ore. Because erosions generate independent of the y-axis, if an erosion generates in an overhang in the Nether, an identical erosion is guaranteed to generate at the exact same x and z coordinates on the ground below such an overhang.

Since erosions generate before features, chorus plants can take root in End erosions. The floor of End erosions is always end stone.

When the game generates new chunks, the surface depth is calculated for every column inside the chunk based on the minecraft:surface noise. This integer is used to create variation in the depth of stone below the surface layers.

When it is less than or equal to 0, the effect extends to the top block from the surface and replaces it with air. Note that because surface depth is calculated per-column, every surface in the column is removed; that is, an identical erosion appears above or below another one if there is an overhang. The surface depth rarely reaches these values, eliciting the rarity of erosions. After the hole is generated, the floor is replaced with a stone block of the respective dimension, and the hole is flooded with water if it is at or below sea level.^[4]

Erosion generation occurs before carver creation in the terrain generation process, meaning that caves, features, and structures can disrupt or even completely conceal them. As a consequence, ore blobs are commonly found in erosions, making ore more accessible to players on the surface.

In Java Edition, erosions have stopped generating in all biomes except frozen oceans and deep frozen oceans since the addition of surface rules, which is unintentional behavior.^[5]

• 
  An erosion in Java Edition Infdev 20100413-1953
• 
  A naturally generated erosion
• 
  A desert erosion
• 
  A taiga erosion
• 
  A snow-covered tundra erosion
• 
  An erosion in a crimson forest, exposing nether quartz ore blob
• 
  An erosion in a nether wastes
• 
  An erosion generated on an outer End island

• The End has few surface features, and no carvers, making End erosions easy to spot.
• This is the only terrain feature that generates in all three dimensions.

Issues relating to "Erosion" or "Basin" are maintained on the bug tracker. Issues should be reported and viewed there.

v t e World features
Terrain features Overworld Terrain Canyon Carver cave Cliff Floating island Hill Mountains Noise cave Surface Surface layers Erosion Slopes Strip Terracotta Marshland Hoodoo Iceberg Water bodies Aquifer Sea level Ocean River Others Ore vein The Nether Carver cave Erosion Lava sea The End Central island Erosion Outer islands Removed Beach Gravel Far Lands Underwater cave Underwater ravine Java Edition only Monolith
Structures Overworld Ruined Portal Surface Desert Pyramid Igloo Jungle Pyramid Pillager Outpost Swamp Hut Village Farm Woodland Mansion Abandoned Camp​[upcoming: Third Drop 2026] Underwater Ocean Monument Ocean Ruins Shipwreck Underground Ancient City Buried Treasure Mineshaft Stronghold Trail Ruins Trial Chambers The Nether Bastion Remnant Nether Fortress Nether Fossil Ruined Portal The End End City Utility Jigsaw Joke 9x9.nbt Bonus barrel Bridge Colosseum command.com.nbt content.nbt desire.nbt house_of_bob.nbt library.nbt llama.nbt Lunar Base Potato Mineshaft Potato Village Ruined Portatol Shapes Removed Village (old) Java Edition only Brick Pyramid Glass Pillars Obsidian Wall Starting House
Features Overworld Lava Lake Spring Surface Bonus Chest Desert Well Disk Iceberg Blue Ice Ice Patch Ice Spike Freeze Top Layer Forest Rock Pile Sulfur Spring Underground Amethyst Geode Pointed Dripstone Dripstone cluster Large dripstone Monster Room Fossil Ore Underwater Magma Sulfur Pool Sulfur Spike Vegetation Patched vegetations Bamboo Coral Reef Kelp Sea Pickle Seagrass Glow Lichen Sculk Vein Sculk Patch Huge Mushroom Root System Tree Oak Swamp Spruce Birch Jungle Bush Acacia Dark Oak Azalea Mangrove Cherry Pale Oak Poplar​[upcoming: Third Drop 2026] Fallen Tree Vines Cave Vegetation Patch Pale Moss Patch Bedrock Edition only Tree with Vines Superflat only Void Start Platform Java Edition only Fill layer The Nether Basalt Columns Basalt Pillar Blob Glowstone Delta Lava spring Fire patch Vegetation Nether Forest Vegetation Twisting Vines Weeping Vines Huge Fungus The End Chorus Plant End Gateway End Platform End Podium End Spike End Island Removed Clay Blob Water Lake Utility Java Edition only no_op Random Boolean Selector Random Selector Replace Single Block Simple Block Simple Random Selector Joke Hash Well Potato Geode Potato Tree