Underground Jungle

See also: Jungle and Guide:Surviving in the Jungle.

A view of the Underground Jungle.

The Underground Jungle is one of the most difficult areas in the world of Terraria(Pre-Hardmode). It is a dense network of small caverns, populated with thorns, water, and some of the more difficult enemies. You can safely but slowly make your way through if you have the Vilethorn, since you can wall yourself in at the first sign of Hornets and then kill them through the walls.

Shrines are common in this environment, often containing chests with rare items or weapons that can't be found anywhere else. Materials such as Stingers, Jungle Spores, and Vines (for use in crafting rare items) can also be gathered here in abundance. This biome will most likely end up taking you to The Underworld without much additional digging.

Underground Jungle
Enemies	Unique treasures	Unique drops
Hornet Man Eater Jungle Bat Piranha Doctor Bones	From Shrines: Anklet of the Wind Feral Claws Staff of Regrowth	Stinger (from the Hornet) Vine (from the Man Eater) Archaeologist's Hat (from Doctor Bones) From vegetation: Jungle Spores Jungle Rose Jungle Grass Seeds Nature's Gift Moonglow

Hunting the Jungle

A jungle and an underground jungle on a large map (TEdit)

The Underground Jungle can be found directly under the Surface Jungle biome. Underground Jungle monsters and loot begin to appear in the middle of the Underground layer, at these depths:

Map Size	Min Start Depth	Average Start Depth	Max Start Depth
Small	60 ft	240 ft	420 ft
Medium	90 ft	360 ft	630 ft
Large	120 ft	480 ft	840 ft

Hardmode

It is suggested that you should gather all the materials you could want from the Underground Jungle before activating Hardmode; the uncontrollable spread of the Underground Corruption will most likely destroy all jungle areas, unless proper Hallow precautions are taken.

While underground mud by itself is somewhat resistant to corruption spread, corruption still can spread through underground jungles by converting jungle grass into corrupted grass. So, to save underground jungles from full conversion, you need to ensure that there are no jungle grass blocks within three squares radius of any corrupted or corruptible blocks.

History

• 1.0.6:
  • More Gems spawn in the Underground Jungle.
  • Thorny Bushes growing from Jungle Grass are now destroyed on contact with the player.
  • Underground Jungle now has Mud Background to avoid spawning Underground/Cavern layer mobs.
• 1.0.5: Unique music track added.
• 1.0.4:
  • Jungle plants now grow underwater.
  • Now found directly under the Surface Jungle biome.
• Pre-Release: Introduced.