This book is a novel by Japanese mystery writer Yuki Haruo. Hiiragi and six other friends went to explore a mysterious underground building in the mountains. When they got lost, they ran into the Yazaki family of three who came to collect in the wild. As it was getting late, they decided to spend the night in this underground building. Unexpectedly, a major earthquake occurred in the early hours of the morning. The entrance to the underground building was blocked by boulders, and the emergency exit was covered by mud and sand, trapping the group in the underground building. At the same time, the earthquake caused changes in the strata, and the accumulated water began to seep into the underground building. The only way to escape from here is to leave one person to operate the winch to let the boulders blocking the entrance fall down, but the person who operates the mechanism will be trapped in this underground building forever.
本书是日本推理作家夕木春央的长篇小说。柊一与朋友等六人到深山里神秘的地下建筑探险, 迷路途中偶遇来野外采集的矢崎一家三口。由于天色已晚, 众人决定在这个地下建筑过夜。没想到凌晨时分发生了大地震, 地下建筑的入口被巨石堵住, 而紧急出口也被泥沙盖住, 一行人被困在地下建筑。与此同时, 地震引发地层变化, 积水开始渗入地下建筑, 逃出这里的唯一方法, 是留下一人操作卷扬机, 让堵住入口的巨石落下, 可操作机关的人就会永远困在这座地下建筑里。
本书是日本推理作家夕木春央的长篇小说。柊一与朋友等六人到深山里神秘的地下建筑探险, 迷路途中偶遇来野外采集的矢崎一家三口。由于天色已晚, 众人决定在这个地下建筑过夜。没想到凌晨时分发生了大地震, 地下建筑的入口被巨石堵住, 而紧急出口也被泥沙盖住, 一行人被困在地下建筑。与此同时, 地震引发地层变化, 积水开始渗入地下建筑, 逃出这里的唯一方法, 是留下一人操作卷扬机, 让堵住入口的巨石落下, 可操作机关的人就会永远困在这座地下建筑里。
