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USA
No data
1957-08-12
Brazil
No data
1958-05-19
Sweden
No data
1958-12-01
The Unknown Terror
(Original title)
Terror desconocido
Argentina
Caverna do Terror
Brazil
To mystirio tis mavris frikis
Greece (transliterated title)
Terror desconocido
Mexico
Terror desconocido
Spain
Okänd terror
Sweden
The Unknown Terror
UK
The Unknown Terror
USA
Beyond Terror
USA (working title)
Sex & Nudity
None
One man shows interest in another man's wife.
Violence & Gore
Mild
A man who disappears is later found dead in a cave. It is said he became a sacrifice to the god of death.
A man fights off mutant natives inside a cave who are covered with fungus.
One man is killed in an explosion inside a cave.
Profanity
None
Alcohol, Drugs & Smoking
Mild
There is a party or reception where there are drinks and smoking.
Frightening & Intense Scenes
Mild
It is not likely that anyone would be frightened by oozing slime in a cave.
One scene that might be frightening is when a woman is chased through the jungle by a mutated man.