IMDb
4.2 /10
2k votes


Adventure · Science Fiction · 1951 · 1h 14min
With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.
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Unknown World (1951): Newsreel Sequence· Clip
Available in United States (data from JustWatch via TMDB · click → opens in provider)

IMDb
4.2 /10
2k votes
Rotten Tomatoes
10 /100
—
Metacritic took the day off
TMDB
4.4 /10
34 votes
Letterboxd
5.2 /10
—
Weighted average
3.7/10