The following account was recorded in the agent's log during your transmission: Umm, massive, crystalline stalactites are hanging from the ceiling of a vast, underground cavern, reflecting the pale colors of luminescent fungi that cover the walls. The air's damp and musty with a smell of wet earth, and the sound of dripping water echoes through the stillness. Like, a tiny, mechanical submarine is somehow embedded inside a huge, transparent geode nestled in the cavern's center, complete with tiny, waving propellers. A low-pressure system seems to be brewing somewhere above ground, judging from the faint scent of rain that's filtering down through the cavern's hidden openings.