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Six Great Hollows

Last updated 2026-08-28

The Six Great Hollows refer to six giant Hollows that currently exist in New Eridu. The majority of new Hollows that appear are all Companion Hollows of the Six Great Hollows.[1]

Description

Besides Hollow Zero, New Eridu currently has six other major "Great Hollows" under intensive monitoring: Cretan, Lemnian, Pursenas, Hawara, Solove, and Papago.
While these six Great Hollows may not match Hollow Zero in size and activity, they remain staggeringly massive and, for various reasons, impossible to eliminate. For many years, they've coexisted with the city, silently mocking humanity's fragility and insignificance.
When Hollows reach a certain scale, they begin to proliferate like a living organism, spawning new "Companion Hollows." Most of the Hollow disasters frequently occurring in New Eridu are caused by Companion Hollows that stemmed from the Great Hollows.
When a Companion Hollow first appears, entering quickly and destroying high-activity entities can effectively halt its growth and likely wipe it out entirely.

Tutorial, Ridu Encyclopedia: The Six Great Hollows

Overview

The Six Great Hollows are massive and active Hollows, which is only outmatched by Hollow Zero. Due to various reasons, the Six Great Hollows are impossible to eliminate.[2] Hollow Zero and the six Great Hollows are connected to each other, and a person can end up in Hollow Zero through a Great Hollow.[1]

Due to the events related to The Creator and Lemnian Hollow, Ether activity has seen a significant rise.[3][4]

List

Icon Name Companions
Icon Cretan Hollow Cretan Hollow
File:Icon Hawara Hollow.png Hawara Hollow
    Icon Lemnian Hollow Lemnian Hollow
    Icon Papago Hollow Papago Hollow
    File:Icon Pursenas Hollow.png Pursenas Hollow
    File:Icon Solove Hollow.png Solove Hollow

      Trivia

      • While Hollow Zero is called a "great Hollow," it is not considered as part of the list for the Six Great Hollows and is treated as separate and higher than the Six Great Hollows.[2][4]

      Etymology

      • Each Great Hollow seems to reference a location or person who was associated with a labyrinth.
        • The Cretan Hollow is likely named after the island of Crete, famous for the mythological labyrinth built by Daedalus where, according to the legend, the Minotaur was imprisoned until the Greek hero Theseus killed him.
        • The Lemnian Hollow is likely named after the Island of Lemnos, where, according to Pliny the Elder, a labyrinth was located.
        • The Hawara Hollow is likely named after Hawara, an archaeological site where the Pharaoh Amenemhat III built a pyramid with numerous traps and protective measures.
        • The Pursenas Hollow is likely named after Pursenas, an Etruscan king whose tomb, according to Pliny the Elder, contained an underground maze.
        • The Papago Hollow is likely named after the Tohono O'odham people of Arizona & Sonora, previously called Papago by Spanish colonizers, who worship the god I'itoi, also known as "The Man in the Maze".
        • The Solove Hollow is likely named after the Solovetsky Islands, which present 35 labyrinths made of local boulders, with the most famous being the group on Bolshoi Zayatsky Island.

      Other Languages

      LanguageOfficial Name
      EnglishThe Six Great Hollows
      Chinese
      (Simplified)
      六大空洞
      Chinese
      (Traditional)
      六大空洞
      Japanese六大ホロウ
      Korean6 공동
      6-Dae Gongdong
      SpanishLas seis grandes Cavidades
      FrenchLes six grandes Néantres
      RussianШесть макрокаверн
      Shest' makrokavern
      ThaiHollow ขนาดใหญ่ทั้งหก
      VietnameseSáu Lỗ Hổng Lớn
      GermanSechs große Höhlen
      IndonesianEnam Hollow Raksasa
      PortugueseAs Seis Grandes Esferas Negras

      Change History

      References

      1. 1.0 1.1 Investigator Training Course, Stages, Knowledge Theory Course: Knowledge Theory Course III
      2. 2.0 2.1 Tutorial: The Six Great Hollows
      3. Event Commission: Joint Investigation: Breaking Thunder
      4. 4.0 4.1 Phaethon's Story, Encore for an Old Dream, Episode 1: Pre-Festival Unexpected Commission

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