The following account was recorded in the agent's log during your transmission: Umm, gray sediment covers the bottom of this enormous, abandoned aquatic stadium... Like, the water's super calm, and the air's kinda stale-smelling, but it's pretty cool how these sea cucumbers are slowly moving around, leaving trails of what looks like shimmering copper dust behind them. A massive screen mounted at the far end of the stadium displays a livestream of the depths of the Mariana Trench, and like, the sound of the deep-sea vent ecosystems somehow syncs up perfectly with the humming of the distant generator I've been hearing. The screen's partially hidden behind a thick layer of coral growth.