Unknown World

Unknown World

1951 · Movie

74 min English

34 votes

AdventureScience Fiction

With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.

Where to watch in Brazil

Available to stream with Cultpix, Artiflix.

Streaming in other countries

Sorted by distance from Brazil

GF French Guiana

TT Trinidad and Tobago

Showing 10 of 130 countries.

Cast, directors & writers

Bruce Kellogg

Wright Thompson, Jr.

Otto Waldis

Dr. Max A. Bauer

Jim Bannon

Andrew "Andy" Ostergaard

Tom Handley

Dr. James Paxton

Dick Cogan

Dr. George Coleman

George Baxter

Carlisle Foundation Chairman

Marilyn Nash

Dr. Joan Lindsey

Victor Kilian

Dr. Jeremiah Morley (uncredited)

Millard Kaufman

Writer

Terry O. Morse

Director

Keywords

cave exploration scientific expedition tunnel underground lake subterranean world underground cavern woman scientist poison gas

About streaming Unknown World in Brazil

Our listings show Unknown World on Cultpix through subscription streaming in Brazil.

Artiflix is listed with a free streaming offer for Unknown World in Brazil. Check the service for account requirements.

Our listings also show streaming in 129 other countries, including Paraguay, Bolivia, and French Guiana. Follow the country guides below to compare providers.

Cultpix is also listed in Paraguay. Catalogs and season coverage can differ between countries.

Compare Paraguay →Compare Bolivia →Compare French Guiana →

Automatically summarized from TMDB watch-provider listings supplied by JustWatch. Listings fetched 2026-10-22. Streaming availability can change. Rental and purchase offers are not included.