The Pit

The Pit is an underwater jail used to imprison those who are considered unredeemable. It is run by the Order of Mata Nui. The Pit has a jailer (Hydraxon) and a Pit Guard (Maxilos), the jailer of which was killed by Takadox but has mysteriously revived. The inner Pit was destroyed due to the Great Cataclysm allowing the prisoners to escape to the Outer Pit. There, due to exposure to the water, they were mutated by the mutagen in the water to water-breathing beings.

The seas around The Pit is black and filled with danger. Here, the six Barraki live, along with many other mutated beings who now wander along it's seabeds. Ehlek also built a base here, although it was destroyed when Mahri Nui sank.

Also, on Metru Nui, the war leaders of the Matoran Civil War were banished to The Pit. This event happened 79,100 years before the Toa Inika reached Voya Nui.

Geography

 * Pillars of Salt: An area at the northern edge of Mahri Nui. Serves as Pridak's favorite hunting grounds.
 * Razor Whale's Teeth: An underwater rock formation in the exact center of Barraki territory. Nocturn likes to hang out there when not serving under Ehlek.
 * Octo Cave: Is a cavern where Kalmah first found the Sea Squids. He has since banned the other Barraki from accessing it after Mantax ate half of the brood.

Trivia

 * Mantax searches The Pit every night for something that is apparently important to all the Barraki, though none of them know what it is. This thing has a symbolic meaning and is made of stone. It also has something to do with the Brotherhood of Makuta, and may be a contract of some kind.
 * Before the Inner Pit was flooded and destroyed, The Pit was a cave with cells.
 * It is now known that the Zyglak roam the remains of the old Pit, for nothing else really lives down there.