Thank you for viewing. This is a set of "Wool" by Hugh Howey. I only read it once with a cover on. "Wool: Volume 1" Hiromi Amami / Hugh Howey A silo with 144 underground floors. The desolate outside world reflected on the cafeteria screen. The only time they can go out is for "cleaning," polishing the lens. But those who went out for "cleaning" never returned alive. --- "Wool: Volume 2" Hiromi Amami / Hugh Howey After the world's destruction, a silo with 144 underground floors. This silo holds some enormous secret――. Juliette, framed in a conspiracy, immediately after being appointed from a mechanic to a sheriff. What she saw when she opened the door and went outside!