8 The sewer was now illuminated by long rows of tall incandescent light bulbs that-from their rough filaments-showed their great age. They sat in small metal bowls and sourced their energy from a long wire that trailed just below their bowls. Both sides of the sewer tunnel had the same row of illumination. Not only was the darkness gone, but so were the puddles and filth. The metallic walls of the culverts changed to ancient, crumbling bricks, filtering the filth between their porous surfaces to create a dry walkway. Jack looked down at Nena’s gaping mouth and smiled. “You were saying?” She shook herself and looked up at him with wide eyes. “This is. . .people made this?” “I wouldn’t say people,” he told her as he tugged her along down the tunnel. The sewer pipe led on for anoth