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“The Tartarus Trench is a dangerous place. Many souls have been lost there. Even the strongest swimmers do not brave those waters, for they are treacherous and filled with poisonous vents.”

The Tartarus Trench is the deepest point in the Endless Sea. It is described as a dangerous location dotted with many hydrothermal vents within. According to Trimaar, many people have died there, as evidenced by the graveyard of ships.


The Tale of Benthomaar (flashback)

After Kalmaar told Trimaar about the Tartarus Trench. Trimaar forbid Kalmaar from going there due to the trench being dangerous. But Kalmar ignored his father's order, and tricked Benthomaar into helping him find a safe route through the trench.

Once they went to the Tartarus Trench, Benthomaar and Kalmaar swam past the vents and successfully made it to the Temple of Wojira.

The Call of the Deep

After being hit by a strange energy pulse while out at sea, P.I.X.A.L. and Zane trace it’s source of origin to the Tartarus Trench, with P.I.X.A.L remarking on the way it affected the underwater creatures, and theorizing that it could be the source of Nya’s issues. They then make haste to the monastery, and inform the others of their suspicions, with Wu declaring they were going to visit the trench.


The ninja enter the trench and witness many sunken ships only to be sunk themselves by a Maaray Guard.

Five Thousand Fathoms Down

Nya and Maya venture to the trench to find a power source for the Hydro Bounty, they only find Kalmaar and they are captured.

The Wrath of Kalmaar

At the Tartarus Trench, Kalmaar held Nya and Maya captive at the Temple of Wojira, and eventually discovered that the Storm Amulet is at the Island of the Keepers. He demanded Nya to tell him more about the island and in return, he would spare her and Maya. However, Gripe told Kalmaar that his father needed him at Merlopia, and the two left the Tartarus Trench.

Long Live the King

Nya and Maya attempt to run away from Ripper Sharks in the trench.

The Calm Before the Storm (flashback)

Kalmaar approaches Glutinous, awakens Wojira and starts his way to Ninjago City.

The Call of Home





The Island

Season 14: Seabound

Season 15: Crystalized

Ninjago Magazine

Behind the scenes

  • In Greek myth, Tartarus was a location in the Underworld where individuals were eternally punished for committing sins against the gods.
    • It is the second location in Ninjago to be named after an area of the Underworld, the first being Stiix.
  • It is based on the Mariana Trench, the deepest trench in the Pacific Ocean.
  • In addition to the episodes, it also appears in the opening sequence for Seabound.


In Ninjago

The Island

Season 14: Seabound

Season 15: Crystalized



Kingdoms, cities and villages: Abandoned village · Coastal village · Farmers' village · Hono Mizu · Ignacia · Jamanakai Village · Keepers' Village · Kingdom of Shintaro · Merlopia · Metalonia · Ninjago City · Nom · Oni land · Ouroboros · Serpentine village · Spinjago (non-canon) · Stiix · Valley of the Sphinx · Village in the valley · Village of Haru · Village of the Formlings
Jungles and forests: Birchwood Forest · Blackwood Forest · Forest of Tranquility · Glimwillow Woods · Hiroshi's Labyrinth · Jankikai Jungle · Primeval's Eye · Toxic Bogs · Uncharted jungle · Vermillion Swamps · Wildwood Forest
Mountains, caves and canyons: Caves of Despair · Corridor of Elders · Crashcourse Canyon · Crystal Caves · Dungeons of Shintaro · Echo Canyons · Firstbourne's nest · Floating Ruins · Geckle Strong-Cave · Golden Peaks · Hollow's Bluff · Ice Cave · Haunted Hill · Mala-Wojira · Mines of Shintaro · Mino Pit · Mount of Eternal Shadows · Mountain of a Million Steps · Mountain of Madness · Mountains of Impossible Height · Munce Home-Cave · No Man's Bluff · Rock-Bottom · Samurai X Cave · Shintaro Mountain · Story cave · Tallest mountain of Ninjago · The Teeth · Torchfire Mountain · Wailing Alps
Tombs and graveyards: Anacondrai Tomb · Cemetery of Souls · Constrictai Tomb · Fangpyre Tomb · Graveyard of ships · Hypnobrai Tomb · Lost Tomb of Impending Peril · Tomb of the First Spinjitzu Master · Tomb of the Stone Army · Venomari Tomb
Water areas: Black River · Boiling Sea · Endless Sea · Frozen pond · Hollow's Trench · Lightning Lagoon · Northern Ocean · River of Darkness · Shadow Bay · Spirit Coves · Tartarus Trench
Islands: Ninjago · Chen's Island · Dark Island · Dyer Island · Glacial Glacier · Glacier Island (non-canon) · Island of the Keepers · Lighthouse Island · Squawk Island · Tiger Widow Island
Deserts: Desert of Doom · Sea of Sand
Other: Arctic (non-canon) · Blind Man's Eye · Billy Badlands · Bottomless pit · Chen's camp · Chrono Crater (non-canon) · Dead's End · Dead Man's Squall · Delta V · Digger's Deep · Digiverse · Dream World (non-canon) · End line · Frozen Wasteland · Glacier Barrens · Ice labyrinth · Manifestation Gate · Mega Monster Amusement Park · Ninjago (LEGO Universe) (non-canon) · Ninjago wharfs · Ninjago Zoo · Outer space · The Pit · The Pit (Shintaro) · Rift of Return · Route 23 · Storm belt · Strangler's Path · Temporal vortex

Buildings and establishments

Temples, palaces, fortresses and monasteries: Anacondrai Temple · Castle of Ice · Chen's monastery · Chen's Palace · Crystal Temple · Fire Temple · Garmadon's Dark Fortress · Garmadon's monastery · Hanging Temple · Ice Temple · Lloyd's treehouse fortress · Merlopian Palace · Monastery of Spinjitzu · Mountain monastery · Ninja Dojo Temple · Oni Temple · Palace (Shintaro) · Pyramid (Desert of Doom) · Pyramid of the Sphinx · Royal Palace · Skull Keep · Serpentine Pyramid · Serpentine's underground fortress · Temple of Airjitzu · Temple of Felis · Temple of Fortitude · Temple of Light · Temple of Madness · Temple of Resurrection · Temple of Wojira
Stores and establishments: Benny's Arcade Emporium · Biker Tavern · Borg Industries · Borg Store · Buddy's Pizza · Chan's Theater · Concert Hall · Dairy Dragon · Dareth's TV studio · Darnagom Enterprises · Ed & Edna's Scrap N Junk · Explorer's Club · Four Weapons Blacksmith · Fur Mart · Garbage depot · Gas station · Geckle courthouse · Grand Sensei Dareth's Mojo Dojo · Kai's dojo · Kiddie Arcade · Kryptarium Prison (Cell one) · Laughy's · Library of Domu · Marty Oppenheimer School of Performing Arts · Mystake's Tea Shop · Ninjago City Aquarium · Ninjago City Bank · Ninjago City Hall · Ninjago City Hospital · Ninjago City Police Station · Ninjago City Prison · Ninjago Doomsday Comix · Ninjago Harbor · Ninjago Metro · Ninjago Museum of History · Ninjago Park · Noodle factory · Repo yard · Ronin's pawn shop · Serpentine library · Steep Wisdom · Steeper Wisdom (non-canon) · Storm Farms · Twitchy Tim's gas station · Vast Industries · Dance class · Wong's Costume · Wu's Academy · Yang Tavern
Houses and apartments: Cliff Gordon's estate · Dareth's apartment · First Spinjitzu Master's house · Hero's Suite · Sally's farm · The Mechanic's headquarters · Vermillion Dome of Doom
Other: Borg Tower (Borg Tower vaults) · Chen's Coliseum · Chen's Royal Arena · Dragon's Forge · Hall of Villainy · Hidden workshop · Hiroshi's Labyrinth Stronghold · Munce arena · Old electronics warehouse · Oni stronghold · Palace gardens · Pythor's base · S.O.G. Headquarters · Sewers · The Mechanic's warehouse · Tower of Tears (non-canon)

Prime Empire

Battle arena · Disco · Fire wall · Forest of Discontent · Marketplace · Glitch · Infinity maze · Okino's house · Place of swords · Scott's garage · Shifty's table · Side-scrolling platforms · Sushimi's sushi restaurant · Terra Karana · Terra Technica · Terra Domina


Chima · Cloud Kingdom · Cursed Realm · Departed Realm · Djinjago · Never-Realm · Ninjago · Realm of Madness · Realm of Oni and Dragons · Underworld


Ethereal Divide · Grasslands

The LEGO Ninjago Movie locations

Ninjago · Ninjago City · Bridge of Fallen Mentors · Canyon of General Unhappiness · Firing Room · Garmadon's Volcano Lair · Ham's street food stall · Jungle of Lost Souls · Koko's apartment · Lost Generals' Lair · Ninja Mech Garage · Ninjago Beach · Ninjago High School · Ninjago Tower · Temple of Fragile Foundations · Wu's temple