Mountain Edge

Mountain Edge

Features	Spruce Oak
Blocks	Grass Block Snow Stone Emerald Ore Coal Ore Iron Ore Infested Stone Bush
Climate
Temperature	0.2
Downfall	0.3
Precipitation	Yes
Colors
Grass color	#8AB689
Foliage color	#6DA36B
Dry foliage color	#977752
Water color	#3F76E4‌[JE only]  #045cd5‌[BE only]
Vibrant Visuals
Atmospherics	Default
Lighting	Cold
Volumetric fog	Default
Color grading	Coolish

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The mountain edge or extreme hills edge is an unused edge variant of the mountains that generated before The Update that Changed the World, and was removed in Java Edition 1.18.

Description

Old

Before Java Edition 1.7.2, all extreme hills used to generate a mountain edge surrounding the whole biome. Similarly to the sparse jungle biome, it was a technical biome intended to provide a smooth transition from other biomes to the mountains. It was nearly identical to the extreme hills biome, but with gentler slopes. Snowfall occurred above Y=90±8.

After this update, they became unused but were still available in Single Biome, before they were removed entirely. They continued receiving updates and appeared identical to the wooded mountains with more trees. After Java Edition 1.17, they also spawned goats and axolotls. The mountain edge has never generated in Bedrock Edition and was unused since its addition, similar to the legacy frozen ocean.

Current

In Bedrock Edition, mountain edges still receive updates, when generated through single biome or behavior packs.

They appear identical to the current wooded mountains biome, with snowfall above Y=120±8, a quite dense vegetation of oak and spruce trees and patches of bushes on the grassland. Llamas spawn here as well as warm animal variants.

With Vibrant Visuals, mountain edges use default environmental settings with a coolish color grading, making the biome appear colder blue. They use cold sunlight, which is slightly brighter at sunrise and sunset.

Mobs

Mountain edges have the same mob spawning chances as windswept hills.

The following mobs naturally spawn here:

In Java Edition

Mob	Spawn weight	Spawn chance	Group size
Creature category
Sheep	12⁄45	26.67%	4
Pig	10⁄45	22.22%	4
Chicken	10⁄45	22.22%	4
Cow	8⁄45	17.78%	4
Llama	5⁄45	11.11%	4–6
Monster category
Spider	100⁄515	19.42%	4
Zombie	95⁄515	18.45%	4
Zombie villager	5⁄515	0.97%	1
Skeleton	100⁄515	19.42%	4
Creeper	100⁄515	19.42%	4
Slime	100⁄515	19.42%	4
Enderman	10⁄515	1.94%	1–4
Witch	5⁄515	0.97%	1
Ambient category
Bat	1	100.00%	8

{ "hasNotes": true, "notes": { "Slime": "Only on slime chunks" }, "1": { "totalWeight": 45, "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 }, { "size": "4-6", "mob": "Llama", "weight": 5 } ], "category": "passive" }, "2": { "totalWeight": 515, "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": "Only on slime chunks", "mob": "Slime", "weight": 100, "notename": "Slime", "size": "4" }, { "size": "1-4", "mob": "Enderman", "weight": 10 }, { "size": "1", "mob": "Witch", "weight": 5 } ], "category": "hostile" }, "3": { "totalWeight": 10, "mobs": [ { "size": "8", "mob": "Bat", "weight": 10 } ], "category": "ambient" } }

In Bedrock Edition

Mob	Spawn weight	Spawn chance	Group size
Monster category
Creeper	100	20.20%	1
Slime	100	20.20%	1
Spider	100	20.20%	1
Zombie	95	19.19%	2–4
Skeleton	80	16.16%	1–2
Enderman	10	2.02%	1–2
Witch	5	1.01%	1
Zombie Villager	5	1.01%	2–4
Creature category
Sheep	12	21.82%	2–3
Cold Chicken	10	18.18%	2–4
Glow Squid	10	18.18%	2–4
Cold Pig	10	18.18%	1–3
Cold Cow	8	14.55%	2–3
Llama	5	9.09%	4–6
Ambient category
Bat	1	100.00%	2

{ "hasNotes": true, "notes": { "Slime": "Spawn attempt succeeds only in slime chunks." }, "1": { "totalWeight": 495, "mobs": [ { "size": "1", "mob": "Creeper", "weight": 100 }, { "note": "Spawn attempt succeeds only in slime chunks.", "mob": "Slime", "weight": 100, "notename": "Slime", "size": "1" }, { "size": "1", "mob": "Spider", "weight": 100 }, { "size": "2-4", "mob": "Zombie", "weight": 95 }, { "size": "1-2", "mob": "Skeleton", "weight": 80 }, { "size": "1-2", "mob": "Enderman", "weight": 10 }, { "size": "1", "mob": "Witch", "weight": 5 }, { "size": "2-4", "mob": "Zombie Villager", "weight": 5 } ], "category": "monster" }, "2": { "totalWeight": 55, "mobs": [ { "size": "2-3", "mob": "Sheep", "weight": 12 }, { "size": "2-4", "mob": "Cold Chicken", "weight": 10 }, { "size": "2-4", "mob": "Glow Squid", "weight": 10 }, { "size": "1-3", "mob": "Cold Pig", "weight": 10 }, { "size": "2-3", "mob": "Cold Cow", "weight": 8 }, { "size": "4-6", "mob": "Llama", "weight": 5 } ], "category": "creature" }, "3": { "totalWeight": 10, "mobs": [ { "size": "2", "mob": "Bat", "weight": 10 } ], "category": "ambient" } }

Data values

ID

Bedrock Edition:

Name	Identifier	Numeric ID
[No displayed name]	extreme_hills_edge	20

History

Java Edition

Java Edition
1.1			12w01a				Added biome variants, including the extreme hills edge.
1.3.1			12w19a				Changed height scale and height depth of extreme hills edge to make this biome slightly taller.
			12w21a				Added emerald ore, which generates in blobs of up to 10 blocks in extreme hills edge.
			12w22a				Emerald ore blob size was reduced to 1 block.
1.4.2			12w38a				Stone monster egg now rarely generates in extreme hills edge biomes.
1.7.2			13w36a				Extreme hills edge no longer generates naturally.
							Extreme hills edge is now required for the new "Adventuring Time" achievement.
							Extreme hills edges now appear similar to extreme hills+, with a full grass surface and oak and spruce trees.
1.8			14w17a				Extreme hills edge is no longer required for the "Adventuring Time" achievement, making it possible to complete in normal gameplay.
1.13			18w19a				"Extreme Hills Edge" has been renamed to "Mountain Edge".
1.17			21w13a				Goats now spawn in mountains, a placeholder until the new mountains are added.
1.18			21w40a				Removed the mountain edge.

Bedrock Edition

Pocket Edition Alpha
v0.9.0			build 1				Added most biomes that exist as of Java Edition 1.8, including the extreme hills edge. The extreme hills edge did not generate.
Bedrock Edition
1.16.200 Experiment Caves and Cliffs			beta 1.16.200.52				Added goats, which currently spawn in extreme hills as a placeholder.
1.16.220 Experiment Caves and Cliffs			beta 1.16.220.50				Goats no longer spawn in the extreme hills biome.
1.18.0			?				Snowfall now occurs above Y=120±8.
1.21.60 Experiment Drop 1 2025			Preview 1.21.60.25				Pigs that spawn in mountain edges are now the cold variant.
1.21.70 Experiment Drop 1 2025			Preview 1.21.70.20				Added bushes, which can generate in mountain edges.
							Cows that spawn in mountain edges are now the cold variant.
			Preview 1.21.70.22				Chickens that spawn in mountain edges are now the cold variant.
1.21.90			Preview 1.21.90.26				Added cold lighting and coolish color grading to mountain edges with Vibrant Visuals.

Legacy Console Edition

Legacy Console Edition
Xbox 360	Xbox One	PS3	PS4	PS Vita	Wii U	Switch
TU9	CU1	1.00	1.00	1.00	Patch 1		Added extreme hills edge.
TU31	CU19	1.22	1.22	1.22	Patch 3		The extreme hills edge biome no longer generates.

Data history

Java Edition
1.13			pre5				The ID smaller_extreme_hills has been changed to mountain_edge.
1.18			21w37a				Prior to the removal of numerical biome IDs, this biome's numerical ID was 20.

Issues

Issues relating to "Extreme Hills Edge" are maintained on the bug tracker. Issues should be reported and viewed there.

Gallery

• 
  An extreme hills edge biome before 1.7.2.
• 
  A mountain edge in a single biome world.
• 
  An extreme hills edge next to a snowy tundra.
• 
  An extreme hills edge next to a jungle.

See also

• Windswept Hills
• Windswept Forest
• Windswept Gravelly Hills
• Gravelly Mountains+
• Sparse Jungle
• Mountains
• Biome/Before 1.18