Nether Keep and Port

The Nether Keep and the Nether Port are two underground structures in the Nether, added by Dungeons and Taverns. Both are built on the vanilla Nether fortress generator, so they sit in the same biomes as Nether fortresses. The keep is a fortified stronghold with a locked vault, and the port is a larger complex of houses linked by bridges. Both are hostile to a player and both reward exploration with chest loot, including netherite materials from the keep's vault.

Generation

Both structures generate in the Nether, in the underground decoration step, in the biome tag used for Nether fortresses. The tag covers the vanilla Nether biomes and the modded Nether biomes the pack matches to them, including Nether Wastes, Soul Sand Valley, Crimson Forest, Warped Forest, Basalt Deltas, Black Ice Glaciers, Crystalline Chasm, Erupting Inferno, Undergrowth, Visceral Heap, Withered Abyss, Mycotoxic Undergrowth, Blackstone Basin, Infernal Holt and Glistering Meadow.

The keep and the port share one structure set, nova_structures:nether_structures, which holds 95 weight in total. Each structure is chosen from the set when a placement point is reached, so the set determines how often each member appears:

Both use the same placement grid: a spacing of 244 chunks (3,904 blocks) and a separation of 115 chunks. These are the in-game values after the pack's Sparse Structures setting, which spreads them out to about 2.9 times the mod's default spacing. The remaining set weight belongs to other structures, so a keep or port is not guaranteed in any given region of the Nether.

The keep is placed without terrain adaptation. The port uses a beard box, which blends its pieces into the surrounding ground.

Layout

Nether Keep. The keep is assembled from the vanilla Nether fortress core pool, so it uses the same bridge, corridor and blaze-room pieces as a normal Nether fortress. Its jigsaw chain is 11 pieces deep. The distinctive feature is a vault chamber built from a Nether fortress chest piece. The vault is a vault block whose key is the Nether Keep Key, a trial key with a custom name. The vault's loot table is covered in the Loot section.

Nether Port. The port is built around one large main piece, nether_port_main, with a bridge pool that attaches four house variants and six path variants. The main building and its bridges are furnished with barrels, decorated pots, banners, campfires, soul campfires, iron doors, armor stands and furnaces. Its walls use nether brick, crimson planks and fences, stripped crimson stems and bone blocks. Its jigsaw chain is 5 pieces deep, so it is shorter than the keep but wider, spreading across bridges over the terrain.

Inhabitants

Both structures add monster spawn overrides whose bounding box is each structure piece. Inside a piece, these overrides replace the usual Nether monster spawns with the following groups:

• Nether Keep: Blazes (2 to 3 per piece, weight 100), Zombified Piglins (4 per piece, weight 50), Wither Skeletons (5 per piece, weight 80), Skeletons (5 per piece, weight 20) and Magma Cubes (4 per piece, weight 30).
• Nether Port: Blazes (1 to 2 per piece, weight 10), Zombified Piglins (1 to 2 per piece, weight 5), Wither Skeletons (1 to 3 per piece, weight 10), Skeletons (1 to 5 per piece, weight 10) and Magma Cubes (1 to 2 per piece, weight 3).

Because the caps are per piece, the mob counts grow with the size of the structure. The keep's larger piece count makes it the denser of the two.

Loot

The keep's vault holds the richer loot of the two. Its netherite materials are the main reason to find it, and the smithing templates are rarer rewards. The generated tables below list every chance:

• Netherite Scrap (51%), Ancient Debris (30%) and Netherite Ingot (10%).
• Golden Apple (28%), Diamond (27%) and Gold Ingot (60%), with Blaze Rods (58%) and Enchanted Books (100%).
• Smithing templates for the rib armor trim and the netherite upgrade.

The port has two chests. The Nether Port chest is the more varied of the two, and the supplies chest is the more useful for building: Gold Ingot (56%), Iron Ingot (48%), Gold Nugget (29%) and Bow (29%). Both chests include Arcane Essence (72% in each). Blazing Fishing Rods and Bombs also appear in the port's chests. The pack keeps the original structure loot and adds modded items on top.

The keep's vault and the port's chests use the generated tables:

Nether Keep nova_structures:nether_keep

Biomes (16): Nether Wastes, Soul Sand Valley, Crimson Forest, Warped Forest, Basalt Deltas, Black Ice Glaciers, Crystalline Chasm, Erupting Inferno, Undergrowth, Visceral Heap, Withered Abyss, Mycotoxic Undergrowth, Blackstone Basin, Infernal Holt, Glistering Meadow, Redstone Abyss (Removed)

Chest loot: minecraft:chests/nether_fortress/fort_inside_generic

Item	Chance	Avg. stack
Arcane Essence	76.3%	4.1
Ominous Bottle	55.3%	1.0
Obsidian	52.7%	1.2
Gold Ingot	39.3%	9.4
Soul Torch	39.0%	2.4
Blaze Rod	38.0%	2.1
Bone	35.7%	1.6
Air	35.0%	0.0
Nether Wart	31.0%	2.5
Nether Brick	27.0%	3.6
Scroll	26.0%	1.0
Blazing Fishing Rod	23.7%	1.0
Fire Charge	21.3%	2.3
Coal	20.7%	1.7
Golden Apple	20.3%	1.0
Crying Obsidian	19.0%	1.1
Gold Nugget	18.0%	2.4
Arrow	16.3%	1.7
Diamond	16.0%	1.6
Bomb	14.7%	2.1
Blank Runestone	14.0%	1.0
Iron Tier Upgrade	9.7%	1.0
Stone Sword	7.3%	1.0
Smithing Template	7.0%	1.0
Gold Tier Upgrade	5.0%	1.0
Blue Bomb	3.0%	1.0
Heavy Chain	1.3%	1.0
Smithing Template	0.7%	1.0
Ring of Expediency	0.3%	1.0
Amulet of Concentration	0.3%	1.0
Fireward Ring	0.3%	1.0
Poisonward Ring	0.3%	1.0
Amulet of Teleportation	0.3%	1.0

Chest loot: nova_structures:chests/nether_keep/vault_keep

Item	Chance	Avg. stack
Enchanted Book	100.0%	1.0
Obsidian	71.3%	1.0
Gold Ingot	60.0%	4.7
Blaze Rod	58.0%	2.3
Smithing Template	53.3%	1.0
Netherite Scrap	51.0%	1.5
Ancient Debris	30.3%	1.5
Crying Obsidian	28.7%	1.0
Golden Apple	27.7%	1.1
Diamond	27.0%	1.6
Netherite Ingot	9.7%	1.0
Smithing Template	9.3%	1.0
Music Disc	9.0%	1.0

Nether Port nova_structures:nether_port

Biomes (16): Nether Wastes, Soul Sand Valley, Crimson Forest, Warped Forest, Basalt Deltas, Black Ice Glaciers, Crystalline Chasm, Erupting Inferno, Undergrowth, Visceral Heap, Withered Abyss, Mycotoxic Undergrowth, Blackstone Basin, Infernal Holt, Glistering Meadow, Redstone Abyss (Removed)

Mobs placed in the structure: Blaze, Zombified Piglin

Chest loot: nova_structures:chests/nether_port/nether_port_chest

Item	Chance	Avg. stack
Arcane Essence	72.3%	4.2
Gold Ingot	35.3%	3.9
Scroll	34.0%	1.0
Air	28.7%	0.0
Enchanted Book	28.0%	1.0
Blazing Fishing Rod	19.3%	1.0
Blaze Rod	19.0%	1.0
Name Tag	19.0%	3.8
Iron Nugget	18.7%	5.2
Bomb	18.0%	2.1
Blank Runestone	17.3%	1.0
Coal	17.3%	5.1
Arrow	17.0%	4.0
Iron Ingot	16.0%	2.1
Saddle	16.0%	1.0
Golden Horse Armor	14.0%	1.0
Bow	13.3%	1.0
Smithing Template	10.7%	1.0
Blaze Powder	9.7%	2.4
Bone	9.3%	4.3
Red Mushroom	9.3%	2.1
Netherite Scrap	8.7%	1.0
Crimson Planks	8.3%	7.8
Nether Wart	8.3%	1.5
Warped Fungus	8.0%	2.1
Crimson Fungus	7.0%	1.9
Crimson Stem	6.7%	2.1
Flint	6.7%	2.2
Glowstone Dust	6.7%	4.2
String	6.7%	5.8
Ancient Debris	6.3%	1.0
Iron Tier Upgrade	6.3%	1.0
Magma Cream	6.0%	2.0
Feather	5.7%	2.9
Golden Chestplate	5.3%	1.1
Skeleton Skull	5.0%	1.0
Blue Bomb	5.0%	1.0
Raw Porkchop	4.7%	2.6
Gold Tier Upgrade	4.0%	1.0
Diamond	3.7%	1.9

Chest loot: nova_structures:chests/nether_port/nether_port_supplies

Item	Chance	Avg. stack
Arcane Essence	71.7%	4.0
Gold Ingot	56.0%	3.1
Iron Ingot	48.3%	1.2
Scroll	36.7%	1.0
Gold Nugget	29.3%	5.6
Air	28.7%	0.0
Bow	28.7%	1.1
Glowstone Dust	28.3%	2.8
Blaze Powder	26.7%	2.9
Gunpowder	26.3%	2.8
Iron Nugget	25.7%	2.8
Fire Charge	25.3%	2.9
Nether Quartz	23.0%	6.2
Blazing Fishing Rod	20.3%	1.0
Arrow	20.0%	4.8
Diamond	16.3%	1.0
Blank Runestone	13.0%	1.0
Bomb	12.7%	2.2
Iron Tier Upgrade	10.3%	1.0
Gold Tier Upgrade	6.3%	1.0
Blue Bomb	2.7%	1.0
Smithing Template	2.0%	1.0
Frostward Ring	1.0%	1.0
Ring of Expediency	0.7%	1.0
Poisonward Ring	0.7%	1.0
Amulet of Teleportation	0.7%	1.0
Amulet of Concentration	0.3%	1.0
Conjurer's Talisman	0.3%	1.0
Emerald Stoneplate Ring	0.3%	1.0
Fireward Ring	0.3%	1.0
Ring of Invisibility	0.3%	1.0

Tips

Bring a Nether Keep Key if you want the keep's vault, because the vault will not open without it. Blazes and Wither Skeletons make up most of the keep's population, so bring fire resistance and a sword that handles the Wither Skeletons' withering attack.

The port's bridges divide its buildings into separate sections, so it can be cleared one area at a time. Its supplies chest is the more useful of its two for iron and gold.

Both structures count toward the pack's Nether advancements. Stumble upon a Nether Keep and Approach a Nether Port are awarded for finding each structure, and Bathe in Powder Snow while in a Nether Keep is awarded for standing in powder snow inside a keep. Both structures also count toward Explore all Skeleton Camps, Skeleton Towers, Nether Port, Fortress and Nether keep.