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Hollow Bough is a biological oddity that has the Science Department scratching their heads - this entire region of the planet is dominated by collosal, organic conglomerations resembling the inside of hollow trees. However, these structures are under attack by an invasive species of voracious vine-like plants, as much a threat to us as the planet itself. We recommend traversing these environs with extreme caution. The deep, dark folds of wood and bark house much more than a first glance lets on.
— Ingame description

Hollow Bough is one of the biomes of Hoxxes IV. It is characterized by its very large rooms with dried grass, wooden walls/floors and large tree like structures. Giant red thorny vines twist and span through the area, being constant hazards. It is largely devoid of much other plant life, although some may still be spotted while traversing these caves. The walls are of average durability, taking 2 pickaxe hits to give away.


There are a few hazards exclusive to Hollow Bough.

There are passive hazards such as the Bloated Vine and Creeper Vine. These will deal damage to the player if touched. The Creeper Vine will retract if damaged, and can be destroyed if it sustains enough damage. The Bloated Vine is a form of minable terrain covered in large red and white thorns; both thorns deal damage if touched, and white thorns will eject as a projectile if damaged or mined.

There are also non-passive hazards such as the Deeptora Bough Wasp Nest and the Stabber Vine. The Deeptora Bough Wasp Nest is similar to the Deeptora Honeycomb. It releases wasps that damage the player if the player walks within a certain radius of the nest. These wasps can be burnt using weapons that cause fire, such as the CRSPR Flamethrower, but will respawn until the nest is destroyed. The Stabber Vine will attack the player by stretching out its vines, tipped with a large blade. They can be disarmed by shooting the yellow formation at the base of the blade. Removing all of the vine's arms will disable the Stabber Vine.


Most enemies can be encountered in the Hollow Bough, including Spitball Infectors, Cave Leeches, and Glyphid Dreadnoughts.

However, the Stabber Vine and Deeptora Bough Wasp Nest are unique to this biome.

Biome Features[]

Item Description
BF Dry Thorn Tumble
Dry Thorn Tumble
A tumble weed-like plant which can be kicked around by the dwarves.
Bough Cone
Bough Cone
Giant acorns that grow in bunches on the ceiling. They detach when damaged and can be kicked around by the dwarves.
Creeper Vine
Creeper Vine
A thin red parasitic vine. Deals damage on contact and rapidly retracts when damaged by the player.
Bloated Vine
Bloated Vine
A bloated, stationary form of the creeper vine, sometimes studded with white thorns that retract and extend. Deals damage on contact and when stabbed by white thorns.
BF Thorn Pot
Thorn Pot
A red plant mass with a cluster of yellow thorns at the head. Deals damage on contact and explodes into thorns when damaged sufficiently.
BF Goo Sack
Goo Sack
A yellow, five-segmented plant. Bursts into slowing goo when damaged enough.
BF Thorny Weed
Thorny Weed
Red and brown weeds growing on the ground.
BF Lichen A
Small brown tubular lichen growing on the floor and wall.
BF Lichen B
Pale, round lichen growing on the floor and wall.
BF Lichen C
Dark, leafy lichen growing on the floor and wall.
BF Lichen D
Brown and green leafy lichen growing on the floor and wall.
BF Corpse Feeder
Corpse Feeder
A strange larva-like creature that wriggles and retreats into the wall when a dwarf comes near.


As with every biome, some of the Ores that can be found in Hollow Bough are determined by the mission type, such as Morkite and Aquarq. The crafting materials found in Hollow Bough are Jadiz Jadiz and Bismor Bismor, with Jadiz being abundant and Bismor being scarce.


  • Added with Update 33: New Frontiers on the 4th February 2021.
  • Caustic Mire was originally announced to be one of the two biomes released with Update 33, but Hollow Bough was later announced to take its place.[1]