The following account was recorded in the agent's log during your transmission: Liquid methane's dripping from a ceiling made of what looks like layered seashells in this, uh, massive underwater cavern. The air's super still, with a weird smell like someone's burning coffee beans, and the pressure's gotta be insane down here, but the cavern itself isn't collapsing or anything. A series of tiny, intricately carved obsidian cubes are somehow embedded in the cavern walls, with what looks like the diagram of the Kabbalistic Tree of Life etched onto each cube's surface – and, like, the cubes are breathing, expanding and contracting slowly, as if they were lungs.