The underground city S6E6 - The underground city 1981
- Released: 1981-05-21
- Runtime: 50 minutes
- Genre:
- Stars: Keiko Han, Keiko Toda, Toru Furuya, Ichiro Nagai, Kenichi Ogata, Toshio Furukawa, Taeko Nakanishi, Kazuyo Aoki, Akio Nojima, Kazuyuki Sogabe, Eiko Masuyama, Mami Koyama, Masako Ikeda, Nachi Nozawa, Reiko Mutoh, Shuichi Ikeda, Yoko Asagami, Minori Matsushima
- Director: