Ancient Aliens
Forbidden Caves
Season 7 Episode 3 of 12
An investigation into whether Earth's deepest caves could contain secret conduits to other worlds, or harbour evidence that aliens once visited the planet
Ancient Aliens airs on Blaze at 2:00 AM, Thursday 18 September.
Learn more about Ancient Aliens and other education/science/factual topics on our factual page
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Education ➝ Science ➝ Factual Topics
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