The following account was recorded in the agent's log during your transmission: A giant, ancient-looking door made of a material that looks kinda like obsidian is slowly sliding open, revealing a massive, naturally formed underground cathedral filled with a warm, golden light. The air's thick with the smell of damp earth, and uh, it's pretty humid down here, but somehow there's this tiny patch of sunlight that's streaming in from somewhere, illuminating the intricate, crystalline formations on the walls. Like, water's dripping down from the ceiling, and the sound's echoing off the walls, but what's really weird is that the droplets are somehow arranging themselves into perfect, functioning QR codes on the stone floor.