Mining engineer Shigeru investigates the disappearance and death of his fellow coworkers when prehistoric nymphs are discovered emerging from the mines. After an attack on the local village, Shigeru heads deeper into the mines only to make a more horrifying discovery in the form a prehistoric flying creature. Soon a second monster appears as the two converge in Fukuoka.

Genres

Cast

Kenji Sahara

Shigeru Kawamura

Yumi Shirakawa

Kiyo

Akihiko Hirata

Professor Kyuichiro Kashiwagi

Minosuke Yamada

Mining Chief Osaki

Yoshibumi Tajima

Izeki

Rinsaku Ogata

Goro

Tsuruko Mano

Osumi

Keiji Sakakida

Tahei

Ichirō Nakatani

Senkichi

Fuyuki Murakami

Professor Minami (uncredited)

Takuzō Kumagai

Policeman Tashiro (uncredited)

Yasuhisa Tsutsumi

Imamura, F-86F pilot (uncredited)