Swamp Hills

This article describes content that has been officially made unobtainable in Bedrock Edition.

It can still be obtained using third-party software. However, this can cause unexpected behavior such as bugs and crashes.

This page describes content that has been removed from Java Edition.

This feature was present in earlier versions of Java Edition, but has since been removed.

Swamp Hills

Structures	Swamp Hut‌[BE only]
Features	Fossil Swamp Oak Huge Mushroom‌[BE only]
Blocks	Grass Block Water Lily Pad Firefly Bush Seagrass Blue Orchid Brown Mushroom Red Mushroom Sugar Cane
Climate
Temperature	0.8
Downfall	0.5
Precipitation	Yes
Colors
Grass color	#6A7039  #4C763C
Foliage color	#6A7039
Dry foliage color	#7B5334
Water color	#617B64‌[JE only]  #4c6156‌[BE only]
Water fog color	#232317‌[JE only]  #4c6156‌[BE only]
Water fog distance	30
Vibrant Visuals
Atmospherics	Swampland
Lighting	Default
Volumetric fog	Swampland
Color grading	Default

The swamp hills or swampland mutated biome is a rare variant of the swamp that no longer generates since Caves & Cliffs: Part II, and was removed in Java Edition.

Description

Old

The swamp hills featured hillier terrain rising up between the flat marshes. These hills would tower over the otherwise low-elevation swamp, with some large areas at high elevation without any water. Additionally, flooded areas in swamp hills tended to reach lower depths than the rest of the swamp, sometimes deep enough to have a gravel floor in place of a dirt floor, like normal oceans. Swamp huts‌^{[Bedrock Edition only]} and fossils generated, and slimes spawned more frequently. Additionally, seagrass did not generate in flooded areas of swamp hills. If it connected to a jungle it had a chance to create a modified jungle edge biome.

The swamp hills had the same vegetation as the regular swamp, with swamp oaks, lily pads, blue orchids, mushrooms, and huge mushrooms.‌^{[Bedrock Edition only]}

Although this biome is called 'swamp hills', it did not actually generate as a 'hills' variant, but as a 'modified' variant of the swamp, making it slightly rarer.

Current

In Bedrock Edition, swamp hills in older worlds still received updates. When generated through single biome or behavior packs, they can also generate new blocks.

They look similar to regular swamps, with patches of firefly bushes and more sugar cane. Frogs can also spawn at daytime, while bogged spawn during the night.

With Vibrant Visuals, swamp hills have a unique brown-green sky color, and stronger volumetric fog effects, fading the sun and sunlight.

Mobs

Swamp hills use the same mob spawning chances as regular swamps.

The following mobs spawn naturally here:

In Java Edition

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	4
Pig	10⁄40	4
Chicken	10⁄40	4
Cow	8⁄40	4
Monster category
Spider	100⁄516	4
Zombie	95⁄516	4
Zombie Villager	5⁄516	1
Skeleton	100⁄516	4
Creeper	100⁄516	4
Slime[note 1]	100⁄516	4
Enderman	10⁄516	1–4
Witch	5⁄516	1
Slime[note 1]	1⁄516	1
Ambient category
Bat	1	8

{ "hasNotes": true, "notes": { "Slime": "Spawning is greatly affected by moon phase" }, "1": { "totalWeight": 40, "mobs": [ { "size": "4", "mob": "Sheep", "weight": 12 }, { "size": "4", "mob": "Pig", "weight": 10 }, { "size": "4", "mob": "Chicken", "weight": 10 }, { "size": "4", "mob": "Cow", "weight": 8 } ], "category": "passive" }, "2": { "totalWeight": 516, "mobs": [ { "size": "4", "mob": "Spider", "weight": 100 }, { "size": "4", "mob": "Zombie", "weight": 95 }, { "size": "1", "mob": "Zombie Villager", "weight": 5 }, { "size": "4", "mob": "Skeleton", "weight": 100 }, { "size": "4", "mob": "Creeper", "weight": 100 }, { "note": "Spawning is greatly affected by moon phase", "mob": "Slime", "weight": 100, "notename": "Slime", "size": "4" }, { "size": "1-4", "mob": "Enderman", "weight": 10 }, { "size": "1", "mob": "Witch", "weight": 5 }, { "note": "Spawning is greatly affected by moon phase", "mob": "Slime", "weight": 1, "notename": "Slime", "size": "1" } ], "category": "hostile" }, "3": { "totalWeight": 10, "mobs": [ { "size": "8", "mob": "Bat", "weight": 10 } ], "category": "ambient" } }

In Bedrock Edition

Mob	Spawn weight	Group size
Monster category
Creeper	100	1
Slime[note 1]	100	1
Spider	100	1
Zombie	95	4
Skeleton	80	2
Bogged	50	4
Enderman	10	2–3
Witch	5	1
Zombie Villager	5	4
Creature category
Sheep	12	2–3
Chicken	10	2–4
Frog	10	2–5
Glow Squid	10	2–4
Pig	10	1–3
Cow	8	2–3
Ambient category
Bat	1	2

{ "hasNotes": true, "notes": { "Slime": "Slimes are spawned once, for both slime chunks and the surface." }, "1": { "totalWeight": 545, "mobs": [ { "size": "1", "mob": "Creeper", "weight": 100 }, { "note": "Slimes are spawned once, for both slime chunks and the surface.", "mob": "Slime", "weight": 100, "notename": "Slime", "size": "1" }, { "size": "1", "mob": "Spider", "weight": 100 }, { "size": "4", "mob": "Zombie", "weight": 95 }, { "size": "2", "mob": "Skeleton", "weight": 80 }, { "size": "4", "mob": "Bogged", "weight": 50 }, { "size": "2-3", "mob": "Enderman", "weight": 10 }, { "size": "1", "mob": "Witch", "weight": 5 }, { "size": "4", "mob": "Zombie Villager", "weight": 5 } ], "category": "monster" }, "2": { "totalWeight": 60, "mobs": [ { "size": "2-3", "mob": "Sheep", "weight": 12 }, { "size": "2-4", "mob": "Chicken", "weight": 10 }, { "size": "2-5", "mob": "Frog", "weight": 10 }, { "size": "2-4", "mob": "Glow Squid", "weight": 10 }, { "size": "1-3", "mob": "Pig", "weight": 10 }, { "size": "2-3", "mob": "Cow", "weight": 8 } ], "category": "creature" }, "3": { "totalWeight": 10, "mobs": [ { "size": "2", "mob": "Bat", "weight": 10 } ], "category": "ambient" } }

Sounds

Music

These music tracks play while the player is in the swamp hills.

Data values

ID

Name	Identifier	Numeric ID
[No displayed name]	swampland_mutated	134

History

Java Edition

Java Edition
1.7.2			13w36a				Swampland M variant added, along with many other biomes. Its grass color now varies.
			13w38b				Marsh-like areas and dead bushes no longer generate in swamp biomes.
1.8			14w26a				Marsh-like areas and dead bushes generate in swamp biomes again.
1.10			16w20a				Added fossils, which can generate in swamps.
1.13			18w14a				Seagrass now generates in swamps.
			18w15a				Changed the tint of water in the swamp biomes from blue to gray to match Bedrock Edition. However, swamp M still uses the same tint, resulting in chlorine-colored water.
			18w16a				"Swampland M" has been renamed to "Mutated Swampland".
			18w19a				"Mutated Swampland" has been renamed to "Swamp Hills".
			pre3				Swamp hills now use the correct water color.
September 28, 2019							During MINECON Live 2019, the swamp came in second place in the Biome Vote; mangrove trees, boats with chests, and frogs would be added.
1.14			18w43a				Drowned no longer spawn in swamps.
1.18			Experimental Snapshot 1				Swamp hills no longer generate naturally.
			21w40a				The swamp hills biome has been removed.

Bedrock Edition

Legacy Console Edition

Data history

Issues

Issues relating to "Swampland Mutated" are maintained on the bug tracker. Issues should be reported and viewed there.

Gallery

• 
  A swamp hills biome in Bedrock Edition. There is no water visible here
• 
  A swamp hut generated in a swamp hills biome in Bedrock Edition
• 
  An overhang generated in a swamp hills
• 
  A swamp hills biome generated next to a modified jungle edge
• 
  Swamp hills in Java Edition
• 
  A swamp hills next to a river
• 
  A swamp hills single biome world
• 
  An example of the temperature variation in swamps, leading to different shades of green for the grass blocks
• 
  Same as the previous image, edited for better visibility
• 
  Swamp hills with ray tracing

See also

• Biome/Before 1.18