File:Vol 15 - 008.png

Summary
A coloured illustration on page 8 of Sword Art Online Volume 15.

Latest image source: Ruranobe

Original image source: TUSF

Full Map of the Underworld
Flatland Goblins' Domain

Northern Cave

Mountain Goblins' Domain

Rulid Village

Orcs' Domain

People of Darkness's Domain

Eastern Gate

Central Cathedral

Human Realm

Obsidia Palace

Dark Territory

Giants' Domain

Ogres' Domain

World's End Altar

The Underworld is shaped such that the human realm is surrounded by what is known as the Dark Territory. In its entirety, it forms the logo of the company Rath to help conceal the true nature of Project Alicization. The logo is made to look like two gears of different sizes, a belt, and the snout of a pig. When this logic is applied to the Underworld's map, it suggests that the emperor's castle of Obsidia is the drive gear that operates the output gear of the human realm.

Illustration: Tatsuya Kurusu

Map
«アンダーワールド»全図 - Underworld's complete map.

«人界» - Human Empire:
 * 北の洞窟 - North Cave
 * 東の大門 - East Gate
 * ルーリッドの村 - Rulid Village
 * セントラル・カセドラル - Central Cathedral

«ダーク・テリトリー» - Dark Territory:
 * 平地ゴブリン族の棲み処 - goblin of plains tribe's habitat
 * 山ゴブリン族の棲み処 - mountain goblin tribe's habitat
 * オークの棲み処 - Orc habitat
 * 闇の人族の棲み処 - people of darkness' tribe's habitat
 * オブシディア城 - Obsidia castle
 * ジャイアント族の棲み処 - Giant tribe's habitat
 * オーガの棲み処 - Ogre's habitat
 * ワールド・エンド・オールター - World End Altar

イラスト＼来栖達也 - Illustrated by Kurusu Tatsuya

Text
闇の土地«ダーク・テリトリー»が«人界»をぐるりと取り囲む形で構成される«アンダーワールド».

«Underworld» is composed of having the region of darkness, called «Dark Territory», surround the «Human Empire».

その全景は、«プロジェクト・アリシゼーション»を偽装するための民間企業«ラース»のロゴマークの形を模している.

The panoramic view of this world imitates the shape of «Rath»'s, the private enterprise that was created as a cover for «Project Alicization», logo mark.

ログは大小ギアと駆動ベルト、同時に豚の鼻をモチーフにしている.

The logo is composed of a big and small gears and a mechanical belt, with the motif of a pig's nose.

この意匠をアンダーワールド地図に重ねると、帝城オブシディアが動力ギアとなり、碾き臼である人界を回す暗喩になっていることがわかる.

This design was repeated in the map of Underworld, thus the Obsidia (imperial) castle can be understood as a metaphor for a power gear that circulates with the Human Empire like a quern.