Neptune

"Huh, Cabal Cruisers keep returning to Neptune's orbital path. I wonder if they are hiding something in its gravity well."

- Crow

Neptune is the eighth planet of the Sol System, with strong winds, glassy dunes, and high pressure at its surface. The ice giant has fourteen moons, including the Hive occupied moon of Nereid.

History
At some point prior to the Collapse, Humanity established a location called Nefele Stronghold. Then, the Humans aboard The ECHO pods comissioned by Soteria survived the Collapse and managed to hide the planet and eventually developed inventions that surpasses the technology developed during the Golden Age before it, including enhancements that enables them to be a Cloud Strider at the expense of a maximum of a 10-year lifespan.

After Empress Caiatl and the Imperial Cabal arrived in the system, increased Cabal traffic around Neptune's gravity well was detected with an unknown purpose.

After Savathûn possessed Osiris's body following the appearance of the Wrathborn up until the moment Mara Sov's coven of Techeuns excorsised her worm and returned Osiris's body, Osiris would stay in a coma until Mithrax purified the relics of Nezarec the Guardian recovered from the Pirate Lords recruited by Eramis. Mithrax would reduce the relics to a concoction to be delivered to Saint-14, who then delivers it to Osiris, where he would wake up from his coma and tell Saint-14 the experience of being possessed by the Witch Queen and the visions of a city on Neptune (eventually called Neomuna).

The Vanguard and Empress Caiatl's fleet believe he is being tricked by the Witch Queen, so decides to get knowledge from Rasputin, but finds out that Rasputin has not yet returned. He and the Bray family suggest that Rasputin be rebuilt by recovering the subminds and housing them in a root kernel. Rasputin is finally awake upon recovering data from Felwinter's Ghost Felspring, with Osiris inquiring Rasputin about the knowledge he holds of a city of Neptune (Neomuna) Osiris saw while being possessed by the Witch Queen. Rasputin and Osiris collaborate on the data referencing Nefele Stronghold. Then, Rasputin tasks the Guardian with recovering data related to Nefele Stronghold from a bunker in the Cosmodrome. They do so and hand it over to the Vanguard and Rasputin for decryption. He finally decrypts them confirming the existence of Neomuna and a mysterious paracausal object called "The Veil" prior to his sacrifice, when Eramis attempted to use the Warsats to initiate ABHORRENT IMPERATIVE, a protocol designed to strike down the Traveler, and allow Xivu Arath's forces to invade Earth at the command of The Witness. The Guardian begin preparations for Neptune as the Witness instructs its new Disciple Emperor Calus to have his Shadow Legion attack Neomuna.

Unknown Regions

 * Neomuna
 * Ahimsa Park
 * Pouka Pond
 * Thrilladrome

List of appearances

 * Destiny 2: Forsaken
 * Beyond Light
 * Season of the Chosen
 * Season of Plunder
 * Season of the Seraph
 * Lightfall