I stumbled on this photo while writing last night's post about the East Side Access Project in New York and just couldn't resist: like some underground rail gun or a particle accelerator whirring to life, this is part of the Second Avenue Subway, the so-called "86th Street Cavern," a subterranean wonder that will soon be indistinguishable from mere infrastructure, captured by MTA photographer Rehema Trimiew. [MTA]