The following account was recorded in the agent's log during your transmission: Ancient Assyrian frescoes cover the walls of a vast, naturally formed underground cavern, umm, illuminated by soft, diffused sunlight filtering in from some unseen opening. Air thick with damp earth and mineral deposits hangs heavy, unmoving, as a perfectly preserved, gleaming, late-1990s-era Mountain Dew vending machine sits incongruously atop a naturally formed, crystalline pedestal, a single, pristine, sealed can still inside. Water from an unseen source trickles steadily into a glittering, gemstone-encrusted drain that appears to lead straight down into solid bedrock, and the air is eerily quiet, devoid of even a single echo.