L_Ender's Cataclysm Dungeons and Where to Find Them
Cataclysm's bosses live inside its dungeons, and each dungeon generates in its own set of biomes. This guide covers the major structures and how far apart they sit.
The great dungeons
These are the widely-spaced set piece structures, all of which override monster spawning:
- Ancient Factory — the rarest, about one attempt per one-hundred-twelve-by-one-hundred-twelve chunk region.
- Sunken City — spaced at roughly one per one-hundred-by-one-hundred chunk region.
- Acropolis, Burning Arena and Cursed Pyramid — each around one per eighty-by-eighty chunk region.
- Frosted Prison — also on the eighty-by-eighty spacing.
- Ruined Citadel — closer, about one per fifty-by-fifty chunk region.
- Soul Black Smith — about one per sixty-by-sixty chunk region.
Smaller sites
Denser structures fill in the world between the great dungeons: the Amethyst Nest in lush caves, and the desert cluster — Desert Temple, Desert Site, Desert Occupied Village — along with Abandoned Spire, Abandoned Temple and Abandoned Village in the frosted biomes, all on tighter thirty-by-thirty spacing.
Hunting bosses
Because the great dungeons are spaced tens of thousands of blocks apart, expect long expeditions between them. The spawn override on every listed structure is your confirmation that you have found a real encounter — come with end-game gear, because these fights are the whole point of the mod.
Fifteen structures feed the whole mod
L_Ender's Cataclysm places 15 structures, and they are the source of everything the crafting grid cannot make. With only 116 crafting recipes in the mod against 155 items, a large share of the item list is loot rather than craft.
The gear the bosses unlock
Two short categories carry the rewards: Weapon Fusion at 8 recipes and Smithing Transform at 9, both unchanged between versions. Boss materials feed those seventeen recipes, which is the mod's entire endgame.
Preparation is vanilla
The mod adds no potion system and only 2 smelting and 2 blasting recipes, so what you take into a dungeon comes from vanilla or from the rest of your pack. There is no Cataclysm-specific consumable to prepare.
Version note
The builds are 3.33 on 1.21.1 and 3.31 on 1.20.1, and their recipe counts match everywhere except stonecutting — 72 recipes against 51 — so the fights and their rewards are identical on either.