Near to a year without electricity, he's learned to improvise--though he appreciates having to hide his light from a sleeping bird instead of armed looters. Pointing the glow out lets it gain some distance, but eventually the glow diffuses and the cavern is defined in shades of grey.

"Margaery," he says, remembering the name from the notes he'd found in Mark's collection. "She'd started having them, along with some nasty headaches."

Tracking along to the right, he aims the light at the bottom edge of the wall, watching where they step. Eventually there's a break in the smooth, pebble-strewn line. "She saw a door," he adds, as he lifts the light to reflect off of wood grain instead of stone. Tracing the edges, he can't see anything more out of the ordinary than a whole ass door in a cave.

"Well, this is bonkers."