The following account was recorded in the agent's log during your transmission: Tangled, fiberoptic vines are snaking across the rusted hull of a Soviet-era submarine that's somehow ended up in a vast, underground cavern... Like, a heavy layer of dust coats everything, but a few anemic LED lights still flicker, casting this faint, eerie glow across the space. Air pressure feels off, my ears keep popping like I'm on a plane taking off. Water's slowly pooling around the submarine's propellers, despite the cavern being totally dry and the air feeling parched and stale, like someone just left a massive dehumidifier on full blast.