Chapter Twelve
They descended deep below the surface and soon encountered several sets of massive steel doors. The open doors were over a foot thick. If closed, they would stop even the most determined from continuing down the tunnel.
The deeper they got, the colder it became. Lucy now understood why several sweatshirts were on the recommended packing list. The floors were concrete, and the walls and ceilings stone. There were painted lines on the floor and, occasionally, they saw a marker indicating how far down they’d passed. The downward slope of the vast tunnel eventually leveled off.
Rows of fluorescent lights hung from the ceiling and provided adequate illumination. Lucy was surprised that the walls of the tunnel were dry. She’d been in caverns before, and they’d all dripped with
