subterranean room

His voice boomed across the dark subterranean room — a school cellar arranged like a military bunker, plastered with posters about different weapons and with tires for exercise drills.

The installation was designed to conjure a sleek, data-saturated metropolis: computer-generated images pulsed and swam over the walls and floor of a large subterranean room, as though every surface were a screen.

The 10 digital light shows in the darkened subterranean room respond to human proximity or motion.

And so it was that about two dozen Pflag volunteers, some in their 20s, clad in sneakers and tattoos, others comfortably into retirement age, found themselves in the very guts of the Great White Way — a windowless, subterranean room in Midtown Manhattan with gray linoleum floors below the Circle in the Square Theater.

That dynamic was on display Friday morning in the subterranean room in the Capitol Visitors Center where Obama delivered a final appeal to House Democrats.