The Nui Caves were a mysterious network of caverns that stretched far beneath Voya Nui. Their name literally means "Great Caves." Of note is the fact that they did not lead to the Chamber of Life, and thus were not explored in the story.
It is assumed they were destroyed when Voya Nui slammed into the Southern Continent.
| Voya Nui | ||||
|---|---|---|---|---|
| Fire Regions: Mt. Valmai • Lake of Lava • Chamber of Life • Lava Reservoirs Water Regions: The Cape of No Hope • Lagoon Entrance • Mahri Nui (Formerly) • Voya Nui Bay Village Regions: Matoran Stronghold • Matoran Village • The Jungle Sanctuary • Canyon Fortress Piraka Regions: Piraka Stronghold • The Chamber of Truth • Piraka Outpost Ignika Chambers: Staircase to the Ignika • The Zone of Nightmares • The Chamber of Death • Umbra and Protodax's Chamber • Lava Chamber Gate Other Regions: Ring of Ice • Cavern of Historical Records • Desert of Sorrows • The Green Belt Lake of Protodermis • Nui Caves • Stone Cord (Destroyed) | ||||