“All the tombs have been interconnected.”
“To make one massive underground fortress.”
Kai and Cole, "All of Nothing"

The Serpentine's underground fortress (also referred to as the Serpentine's inner sanctum[1]) is a massive subterranean lair, built beneath the Constrictai Tomb for the Serpentine to use during their hunt for the Fangblades. Numerous tunnels connect the fortress to the other Serpentine Tombs, enabling the snakes to move around Ninjago without being detected by their enemies. 

History

All of Nothing

When the ninja discover that the Serpentine have been using underground routes to sneak around and retrieve the Fangblades, they head out to get the Fangblades back.

The ninja quietly move in the shadows of the underground fortress, watching the snakes converse among themselves. However, they are quickly spotted, and Nya tries to contact Lloyd to no avail. As all four ninja fight the Serpentine, they notice that in the middle of the room are three silver Fangblades. Cole makes a run for it but is quickly stopped in place with a trap. Spikes rise up from the ground and create a giant cage, encasing them.

Nya successfully contacts Lloyd and informs him of their situation, to which Lloyd rushes over. Chokun and Acidicus suggest that they celebrate, and Pythor agrees after a bit of convincing from Skales. The Serpentine proceed to celebrate with the Slither Pit, as it is entertainment in the Serpentine's eyes, and while the ninja contemplate an escape plan, Lloyd arrives, however, he is noticed immediately because he trips and falls down to where a crowd of snakes are cheering. As Lloyd is humiliated, Lord Garmadon appears with the Skulkin army behind him, and they rush into battle. Lloyd releases the ninja from their confinement, and they escape with the Fangblades.

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In LEGO Ninjago: Masters of Spinjitzu

Concept Art

References

Locations

Landmarks

Abandoned village · Anacondrai Tomb · Birchwood Forest · Blackwood Forest · Blind Man's Eye · Billy Badlands · Boiling Sea · Borg Tower Vaults · Bottomless pit · Castle of Ice · Caves of Despair · Chen's camp · Chen's Island · Chrono Crater (non-canon) · Coastal village · Constrictai Tomb · Corridor of Elders · Crashcourse Canyon · Crystal Caves · Dark Island · Dead's End · Dead Man's Squall · Delta V · Digger's Deep · Digiverse · Dream World (non-canon) · Dungeons of Shintaro · Echo Canyons · Endless Sea · Fangpyre Tomb · Firstbourne's nest · Floating Ruins · Forest of Tranquility · Frozen Ice Pond · Frozen Wasteland · Geckle courthouse · Geckle Strong-Cave · Glacier Barrens · Glacier Island (non-canon) · Golden Peaks · Hall of Villainy · Haunted Hill · Hiroshi's Labyrinth · Hollow's Bluff · Hono Mizu · Hypnobrai Tomb · Ice Cave · Ice labyrinth · Ignacia · Jamanakai Village · Jankikai Jungle · Kingdom of Shintaro · Mala-Wojira · Manifestation Gate · The Mechanic's headquarters · The Mechanic's warehouse · Mega Monster Amusement Park · Merlopia · Metalonia · Mines of Shintaro · Mino Pit · Mount of Eternal Shadows · Mountain of a Million Steps · Mountain of Madness · Mountains of Impossible Height · Munce arena · Munce Home-Cave · Ninjago (LEGO Universe) (non-canon) · Ninjago City · Ninjago Harbor · Ninjago Park · Ninjago wharfs · Nom · No Man's Bluff · Oni land · Oni stronghold · Ouroboros · Outer space · The Pit · Primeval's Eye · Pyramid (Desert of Doom) · Pyramid (Sea of Sand) · Repo yard · Rift of Return · River of Darkness · Rock-Bottom · Route 23 · Samurai X Cave · Sea of Sand · Shadow Bay · Shintaro · Shintaro Palace Gardens · Spinjago (non-canon) · Spirit Coves · Stiix · Stone Army Vault · Storm belt · Story cave · Tallest mountain of Ninjago · Tartarus Trench · Temporal vortex · Tiger Widow Island · Tomb of the First Spinjitzu Master · Torchfire Mountain · Toxic Bogs · Venomari Tomb · Vermillion Swamps · Village in the valley · Wailing Alps · Well of Souls · Wildwood Forest

Buildings and establishments

Anacondrai Temple · Benny's Arcade Emporium · Biker Tavern · Borg Store · Borg Tower · Buddy's Pizza · Chan's Theater · Chen's Coliseum · Chen's monastery · Chen's Royal Arena · Chen's Palace · Cliff Gordon's estate · Concert Hall · Borg Industries · Dareth's apartment · Dareth's TV studio · Darnagom Enterprises · Dragon's Forge · Ed & Edna's Scrap N Junk · Explorers Club · First Spinjitzu Master's house · Fire Temple · Four Weapons Blacksmith · Fur Mart · Garmadon's Dark Fortress · Garbage depot · Garmadon's monastery · Gas station · Grand Sensei Dareth's Mojo Dojo · Hanging Temple · Hidden workshop · Hiroshi Labyrinth Stronghold · Ice Fortress · Kiddie Arcade · Kryptarium Prison · Laughy's · Library of Domu · Lighthouse · Lloyd's treehouse fortress · Marty Oppenheimer School of Performing Arts · Monastery of Spinjitzu · Mystake's tea shop · Ninjago City Aquarium · Ninjago City Bank · Ninjago City Hospital · Ninjago City Police Station · Ninjago City Prison · Ninjago Doomsday Comix · Ninjago Metro · Ninjago Museum of History · Ninjago sewers · Noodle factory · Old electronics warehouse · Oni Temple · Ronin's pawn shop · Royal Palace · Shintaro Palace · Skull Keep · Serpentine's underground fortress · Steep Wisdom · Steeper Wisdom (non-canon) · Temple of Airjitzu · Temple of Fortitude · Temple of Light · Temple of Madness · Temple of Resurrection · Temple of the Endless Sea · Tower of Tears (non-canon) · Twitchy Tim's shop · Underground Library · Vast Industries · Vermillion Dome of Doom · Vlad Tutu's dance class · Wind Farms Power Station · Wong's Costume · Wu's Academy · Yang Tavern

Prime Empire

Battle arena · Disco · Fire wall · Forest of Discontent · Gamer's Market · 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

The Sixteen Realms

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

Other

Ethereal Divide

The LEGO Ninjago Movie locations

Ninjago · Ninjago City · Bridge of Fallen Mentors · Canyon of General Unhappiness · Firing Room · Garmadon's Volcano Lair · Ham's shop · 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

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