Watch Unknown: Cave of Bones online in HD

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.

Unknown: Cave of Bones (2023) is a documentary film running 1h 33m, directed by Mark Mannucci. It is available in HD on Cineby for 5 credits. Create an account, add credits and the unlock is yours permanently. Use the player controls for subtitles, quality and fullscreen.

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