Inunaki tunnel (or Inunaki village), which literally translates to howling dog tunnel, is a real place located in the Miyawaka town, Fukuoka Prefecture, Japan. It is a famous horror spot where people have been killed or burnt to death. After many trespassers, the tunnel is now sealed with concrete blocks. It is said that Japanese law does not apply beyond the entrance of Inunaki. It’s considered to be the most horrifying place in Kyushu and countless horror stories are born from the place. - Steam