Unknown World
“Drilling into the forbidding depths of the earth!”
We checked 8 streaming services in India on 05 Jun 2026 at 14:19 IST
About
With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.
Cast
Where does Unknown World rank today?
Unknown World is #8396 on the CineFlixo Daily Streaming Charts today.
- Highest: #8396
- Top 10: 0 days
- Top 100: 0 days
Watch Unknown World Online Free in HD
Stream Unknown World online free in HD on CineFlixo. A talked-about adventure and science fiction movie originally produced in Inglés and released in 1951, it's earned a solid 4.4/10 from 34 viewers worldwide.
About Unknown World
“Drilling into the forbidding depths of the earth!”
With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world. Running 74 minutes.
Unknown World Cast and Characters
The cast features Bruce Kellogg (as Wright Thompson, Jr.), Otto Waldis (as Dr. Max A. Bauer), Jim Bannon (as Andrew "Andy" Ostergaard), Tom Handley (as Dr. James Paxton), and Dick Cogan (as Dr. George Coleman). Their performances are a major reason Unknown World has built such a passionate audience.
Where to Watch Unknown World Online
On CineFlixo you can watch Unknown World free — no account, no credit card, no ads in the middle of the show. We stream the full film in 720p / 1080p HD, with subtitles when available, on any device: phone, tablet, laptop, or smart TV browser.
▶ Watch Unknown World NowWhy People Are Watching Unknown World
Unknown World flies under the radar but it deserves your attention. What makes it work is world-building that respects the audience's intelligence. If you enjoy Inglés storytelling that doesn't follow the same tired beats, this is the kind of film you'll end up recommending to friends.
Frequently Asked Questions about Unknown World
Where can I watch Unknown World online for free?
You can watch Unknown World online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How long is Unknown World?
Unknown World runs for 74 minutes (about 1.2 hour).
Is Unknown World good? What's the rating?
Unknown World holds a 4.4/10 rating based on 34 reviews — a niche pick worth checking out.
Who is in the cast of Unknown World?
The main cast includes Bruce Kellogg, Otto Waldis, Jim Bannon, and Tom Handley, plus a strong supporting ensemble.
Is Unknown World available in Inglés?
Yes — Unknown World was originally produced in Inglés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Unknown World released?
Unknown World was released in 1951.
Do I need an account to watch Unknown World on CineFlixo?
No. CineFlixo is free and you can watch Unknown World without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Movies You Might Like
If you enjoyed Unknown World, check out A Trip to the Moon, The Life Aquatic with Steve Zissou, Mimic, The 13th Warrior, and Eden Log.
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Frequently Asked Questions
Common questions about Unknown World
Where can I watch Unknown World for free?
You can watch Unknown World (1951) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is Unknown World about?
Unknown World is a Adventure/Science Fiction English-language film. With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.
When was Unknown World released?
Unknown World was released on October 26, 1951. It has a runtime of 1h 14m. The film was produced by Lippert Pictures.
Who stars in Unknown World?
Unknown World stars Bruce Kellogg, Otto Waldis, Jim Bannon and Tom Handley. The full cast list is available in the Cast section above.
Is Unknown World available in HD?
Yes, Unknown World is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.