The following account was recorded in the agent's log during your transmission: A massive, cyclopean structure rises out of the darkness, its rough-hewn stones covered in lichen and moss, and umm, there's this weird, pulsating symbol etched into the wall, it's giving off a low, subsonic hum. The air's thick with the scent of damp earth and decaying leaves, and the air pressure feels heavy, like a storm's brewing somewhere. Like, the walls are somehow absorbing the faint, flickerless light that's emanating from the crystal pillars outside, but the symbol on the wall is somehow still casting a shadow – on the air itself, not on any surface.