He stepped closer. The door loomed over them, about four feet wide and reinforced with thick iron bands that looked like something from a fallout shelter. Except older. Cruder. Like it had been welded shut by someone panicking, not planning.
Daniel placed his fingertips near the bulging center. The metal vibrated. Only slightly. Barely there. But unmistakably. Megan’s breath caught. “Dan. Stop. Don’t touch it again.” He pulled his hand back immediately.