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.
as Shigeru Kawamura
as Kiyo
as Professor Kyuichiro Kashiwagi
as Mining Chief Osaki
as Izeki
as Police Chief Nishimura
as Staff Officer Takeuchi
as Sunagawa
as Military officer
as Goro
as Chief of Police
as Haru
as Tsunesan
as Suteyan
as Osumi
as Yoshizo
as Sabu
as Tahei
as Senkichi
as Dr. Minakami (uncredited)
as Professor Minami (uncredited)
as Professor Isokawa (uncredited)
as Policeman Tashiro (uncredited)
as Imamura, F-86F pilot (uncredited)
as Kitahara, F-86F pilot (uncredited)
as F-86F pilot (uncredited)
as Rodan / Meganulon / Hotel Manager
as Rodan / Meganulon
as Meganulon / Fighter pilot
as Sunagawa's colleague (uncredited)
as Female Honeymooner (uncredited)
as Coroner (uncredited)
as Kiyo's neighbor (uncredited)
as News Reader (uncredited)
as Nurse (uncredited)
as Laborer (uncredited)
as Coal mine employee (uncredited)
as Policeman at crime laboratory (uncredited)
as Okinawan correspondent (uncredited)
as Policeman (uncredited)
as Journalist (uncredited)
as Reporter (uncredited)
as Radio operator on jeep (uncredited)
as Soldier in jeep (uncredited)
as Meganulon (uncredited)
as Nakagawa, male honeymooner
