Great Elroe Labyrinth

“	Welcome to our hell on earth, the Great Elroe Labyrinth.	”
— Basgath, Entering the Great Elroe Labyrinth, Light Novel Vol. 4

The Great Elroe Labyrinth is the largest labyrinth in the world, connecting the continents of Daztrudia and Kasanagara underground while having an ocean above it. It is home to a myriad of monsters that often have the name of the dungeon attached to their name. This is the first dungeon the protagonist awakes in after her reincarnation.

Background

The Great Elroe Labyrinth is an important connection between Daztrudia and Kasanagara, as the ocean is impassable due to the presence of water dragons. While teleportation circles are also an option, the Labyrinth is still the only land connection between the two continents.

The Labyrinth is in total far larger than Hokkaido.^[1]

Plot

Two characters were reincarnated inside of the labyrinth, one as a nameless Small Lesser Taratect and the other as an Earth Dragon egg. Fortunately for the dragon egg, she was brought out of the labyrinth by a group of adventurers, while the reincarnated spider has to live in the harsh environment of the labyrinth.

Layout

Part of the Labyrinth Kumoko traversed as of Manga Chapter 22

The Labyrinth is separated into four different levels of depth; the Upper Stratum, Middle Stratum, Lower Stratum, and Bottom Stratum.

The Upper Stratum is the highest floor of the labyrinth and the area that the weakest monsters inhabit, although nearly all of them are poisonous. People that pass through the Labyrinth to cross from Daztrudia to Kasanagara will travel only through this layer, as any lower ones would be too dangerous for humans.

The Middle Stratum of the Labyrinth sits between the Upper and Lower Stratum. The entire area is covered in flowing, red-hot magma.

Below the Middle Stratum are the Lower Stratum and Bottom Stratum. Compared to the Middle Stratum the environment is less hostile, being a simple cavern landscape, but instead are swarmed with many powerful monsters that are incomparable to the Upper and Middle Stratum. There are some monsters that are not powerful in these Strata, such as the snail-bug.^[2]

Ecosystem

Some of the monsters of the labyrinth, such as small rock turtles, Elroe basilisks, and Elroe frogs are able to digest the rocks of the labyrinth. Plant-type monsters, such as the Elroe wiris, are likely able to extract energy from labyrinth in the same way, and provide a food source for the herbivores such as Elroe Mowajitz.^[3]

Known Individuals

Monster Population

Upper Stratum

Creatures in this layer seem to be weaker than the other layers, most of them also specialize in inducing status effects.

Small Lesser Taratect
Elroe Frog
Elroe Randanel (three intimate friends)
Elroe Peckatot (Penguin)
Elroe Basilisk
Small Rock Turtle
Elroe Ferect (Centipede)
Elroe Baladorado (Snake)
Elroe Kolift (baby earth wyrm)
Elroe Mowajitz (Deer)
Elroe Greym (Mouse)
unnamed bat monster
unnamed 6-legged wolf monster
Fenegrad
Elroe Wiris (flower) (manga short story)
Water dragons

Middle Stratum

As the middle layer is filled with lava pools most of these creatures have fire related attacks and fire resistance capable of swimming in the lava.

Elroe Piek (Red dog)
Elroe Geafrog (Elroe Frog's evolution)
Elroe Debegiad (Round bug)
Elroe Gunerush (Seahorse)
Elroe Guneseven (Catfish)
Elroe Gunerave (Eel)
Elroe Gunesohka (Fire Drake)
Fire dragons

Lower Stratum

Most of the creatures in this layer are very dangerous compared to the ones from the upper layers. Some of the weaker monsters that appear in the Upper Stratum are seen in the Lower Stratum as stronger monsters avoid them due to the weaker monsters being mainly poisonous and hence, unfavourable to consume.^[6]

Finjicote (Bee)
High Finjicote
General Finjicote
Queen Finjicote
Elroe Gastruch (Snail-Bugs)
Elroe Greshigard (Mantis)
Elroe Daznatch (limbed fish)
Elroe Kohokoro (Pill bug)
Elroe Randanel (three intimate friends)
Greater Taratect
Anogratch (Monkey)
Bagragratch (Giant monkey)
Elroe Baladorado (Snake)
unnamed Elroe Baladorado evoultion (manga only)
Elroe Baraggish (Giant snake)
Earth dragons
Elroe Utoeundo (Metal insect)^[7]
unnamed winged lion monser (manga only)
Frog prince (super-evolved frog)^[8] (manga short story)
Giant metal pond skater^[8] (manga short story)
unnamed giant Elroe Frog evolution. (anime only)
unnamed giant Elroe Gastruch gag evolution (manga bonus gag only)

Bottom Stratum

The most dangerous place in the dungeon due to being inhabited mostly by Earth Dragons, and being the place where the Queen Taratect can be found when she's not wandering around the Labyrinth.

Wandering

These creatures move around the different layers of the labyrinth.

Arch Taratect
Puppet Taratect
Queen Taratect (when laying eggs)
The Nightmare's Vestige

Features

The Daztrudia entrance is surrounded by a fortress. The fortress doubles as a breakwater for a demon invasion from Kasangara, and as a barrier to trespassers and escaping monsters.^[9]

The Great Elroe Labyrinth is not only an important landmark but also the most important place of the MA System. The Bottom Stratum is where the System Core is located. The core works as the CPU of the System. The Earth Dragons in the Bottom Stratum work as guardians to protect the System Core. The Labyrinth is also the only place where Sariel's voice can be heard mostly in dreams.

History

Year 840: An unusual young taratect individual is sighted. Spider thread and a wyrm egg are collected from its nest and presented to the Analeit royal family.
Year 841: The Nightmare of the Labyrinth and a Queen Taratect emerge.
Year 843: The Nightmare's Vestiges are identified.
Year 851: A Nightmare's Vestige is defeated by Hero Julius

Trivia

Elroe Randanael could be a reference to the "rule of three" trope.
Elroe Piek could be a reference to One Piece's Akainu whose nickname means red dog and has magma related power.

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