The following account was recorded in the agent's log during your transmission: Massive, arched ribs made of what looks like translucent bone stretch across the ceiling of a vast, subterranean cavern. Uh, like, water drips slowly from the tips of the ribs, forming these crystalline stalactites that refract the faint, blue-green light filtering through the bone itself. The air's got a weird, slightly acidic tang to it, and... it's somehow raining upwards, droplets of water rising from the dusty cave floor to get lost in the darkness above. A thin, pulsating line of iridescent color seems to be tracing out a Kabbalistic Tree of Life pattern across one wall.