The following account was recorded in the agent's log during your transmission: Uh, sunlight's streaming in through a narrow slot canyon, Echo, illuminating this massive, naturally occurring crystal cave deep within some mountain range. Like, the air's got a crisp, dry feel to it, with a hint of salt and ozone-free freshness, and I can smell the faint scent of crystalline structures. An impossible, perfectly circular pool of liquid silver mercury just... exists at the cave's center, reflecting the crystals above like a still, reflective mirror, without any ripples or movement, defying all laws of fluid dynamics. It's eerily quiet, too, except for a faint, gentle hum.