Unknown World (1951): cast, story & where to watch
1951 · Film · ★ 4.2
Released in 1951, Unknown World is an adventure and science fiction film directed by Terry O. Morse, running about 74 minutes. “Drilling into the forbidding depths of the earth!” — that tagline sets the tone.
What it’s about. With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.
Who’s in it. Unknown World stars Bruce Kellogg as Wright Thompson, Otto Waldis as Dr. Max A. Bauer, Jim Bannon as Andy Ostergaard and Tom Handley as Dr. James Paxton, among others.
How it landed. With an audience score of 4.2/10, Unknown World has proved divisive with audiences.
Where to watch. In US you can stream it on Philo, YouTube TV, Night Flight Plus and Screambox Amazon Channel and rent or buy it from Amazon Video and FlixFling. See the full, country-by-country breakdown on our where to watch Unknown World page.
If you liked it. Fans of Unknown World tend to enjoy The Lord of the Rings: The Return of the King, Inception, Interstellar and The Lord of the Rings: The Fellowship of the Ring.
Frequently asked
- Where can I watch Unknown World (1951)?
- In US, Unknown World is available to stream on Philo, YouTube TV and Night Flight Plus, and rent or buy from Amazon Video and FlixFling. Availability varies by country — check our where-to-watch page for every region.
- Is Unknown World worth watching?
- Unknown World holds an audience score of 4.2 out of 10, and is a strong pick if you enjoy adventure and science fiction. Reactions are mixed, so it may depend on taste.
- Who stars in Unknown World?
- Unknown World stars Bruce Kellogg, Otto Waldis, Jim Bannon, Tom Handley and Dick Cogan.
- When was Unknown World released?
- Unknown World was released in 1951, with a runtime of about 74 minutes.