A face in a cloud no trace in the crowd.

" The walls are endlessly bare. Nothing hangs on them, nothing defines them. They are without texture. Even to the keenest eye or most sentient fingertip, they remain unreadable.

You will never find a mark there.
No trace survives.
The walls obliterate everything.

They are permanently absolved of all record. Oblique, forever obscure and unwritten. Behold the perfect pantheon of absence."