How long is Unknown: Cave of Bones?

Unknown: Cave of Bones is 1 h 33 min long (93 minutes). If you start it at 8:00 pm it ends at 9:33 pm; add about 20 minutes if you watch trailers first.

What is Unknown: Cave of Bones rated?

Unknown: Cave of Bones is rated PG in the US.

Where can I stream Unknown: Cave of Bones?

In the US, as of 2026-11-06: Netflix (subscription), Netflix Standard with Ads (subscription). Availability changes often; this page loads the live list for your country (streaming availability by JustWatch).

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Where to watch Unknown: Cave of Bones (2023) tonight

Unknown: Cave of Bones (2023) runs 1 h 33 min, is rated PG in the US and averages 7.1 from 59 TMDB members. Scientists examine underground clues from over 250,000 years ago that raise questions about our early relatives — and what it truly means to be human.

Runtime: 1 h 33 min — ends 9:33 pm if you start at 8:00 pm
Rated: PG (US)
Genres: Documentary
Released: July 16, 2023
TMDB rating: 7.1 / 10 from 59 votes
Director: Mark Mannucci
Starring: Lee Berger
Language: English

Good for a group? Better for one or two who will actually watch.Documentary reward attention; a room that talks over it will miss the point.

Where to watch it tonight

Availability loads live for your country. See where Unknown: Cave of Bones streams (JustWatch via TMDB) →

Streaming availability by JustWatch. In the US, as of 2026-11-06: Netflix (subscription), Netflix Standard with Ads (subscription).

Questions people ask

How long is Unknown: Cave of Bones?: Unknown: Cave of Bones is 1 h 33 min long (93 minutes). If you start it at 8:00 pm it ends at 9:33 pm; add about 20 minutes if you watch trailers first.
What is Unknown: Cave of Bones rated?: Unknown: Cave of Bones is rated PG in the US.
Is Unknown: Cave of Bones a good movie to watch with a group?: Better for one or two who will actually watch. Documentary reward attention; a room that talks over it will miss the point.
Where can I stream Unknown: Cave of Bones?: In the US, as of 2026-11-06: Netflix (subscription), Netflix Standard with Ads (subscription). Availability changes often; this page loads the live list for your country (streaming availability by JustWatch).

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If you like Unknown: Cave of Bones

Unknown: Cave of Bones on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-06. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists