Holy shit.
Matriarch Teersa (one of the powerful tribe elders and the only one that likes Aloy lol) just revealed to me where Aloy came from.
Major story spoilers.
She says that Aloy has no mother. She was born of the sacred mountain/of the Goddess/All-Mother (the deity they worship) and where she inhabits. She was born the day All-Mother slew the Metal Devil, the king of the machines back in the time where there was a Great War between the machines and the faithful humans that refused to be ruled by them (and allied with All-Mother). Teersa found Aloy here, but the other matriarchs believed a dark power placed her there, and thought of her as cursed from then on.
I entered the room where she found Aloy, and Aloy approached the door beyond which the Goddess was supposed to inhabit. A synthetic computer voice tried to scan my body but told my identity couldn't be verified. Teersa says I need to clear the "corruption" within for the mountain to let me open the door.
Meanwhile people just tried to assassinate me and I look like a woman wearing more normalish clothing that I have no idea why.
I have no idea what the fuck is going on but this is cool as fuck
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