阿蘇山
In the small mining village of Kitamatsu, near the foothills of Mount Aso on the southern Japanese island of Kyushu, two miners have gone missing. The two men, Goro and Yoshi, had brawled earlier that day, and after they entered the mine to start their shift, the shaft had flooded. Shigeru Kawamura, a tunneling and safety engineer at the mine, heads below to investigate and discovers Yoshi's lacerated corpse.