The Pit

Loot spoiler:

Upper rooms will contain mostly early game loot such as enchanted leather, food and other simple items.

Lower rooms will contain enchanted iron armor and tools.

Rare lower rooms may spawn including:

 ~Library room with enchanted books

~Throne room with evoker and loot chest and barrels

~A Very rare diamond block vault room with three diamond blocks and four loot chests (aboout 1 in every 50 pit structures)

~Other assorted rare rooms

There is NO Diamond or netherite loot, or any loot from The End or The Nether. So it does not break a vanilla game.

Some rooms do not contain chests, but instead the "loot" is whatever materials are found in the room itself such as redstone supplies, etc...

Room Spoiler:

Most rooms will contain 1 or 2 hidden mob spawners or multiple redstone traps.

Some rooms will not contain any mobs or loot (unless the mob has migrated from an adjacent room)

There are a total of 22 different rooms for thousands of different combinations! (as of the initial release). More rooms may be added in the future if this mod gains popularity.

Biome generation:

These pit structures will NOT generate in oceans, The Nether or The End as well as a few assorted biomes which I selected as they clashed with the theme.