Sulfide Caves
Sulfide Caves generates between Limestone Grotto and Deeprock Caverns, and is very different compared to other biomes, it has multiple eroded-like levels where slime blocks may spawn at the edges for a safe fall. The water is toxic and will poison the player on touch. It has flowing water and many flowers, including plants with custom loot tables.

Structures
Sulfide Caves may generate 5 structures, the trial spawners and the Sulfide Huts, which contains potions and suspicious stew which may grant a positive effect or poison.
Oozing Beetroot
Harvesting Beetroot in Sulfide Caves drops Oozing Beetroot instead of normal Beetroot, and when eaten, grants oozing to the user which also makes the user immune to the toxic water, duration scales with progression.
Lucky Carrot
Harvesting Carrots in Sulfide Caves may drop a Lucky Carrot, and when eaten, grants luck to the user which grants the user extra drops when killing mobs, duration scales with progression.
Crumbling Potato
Harvesting Potatoes in Sulfide Caves drops Crumblin Potatoes, and these potatoes can be smelted in a furnace to be turned into sand, which makes it possible to farm sand.