Alien Disclosure Files
The Doorway
Season 1 Episode 4 of 13
Millions of years ago Mars, aka the Red Planet, had a lot in common with Earth, but it's now a desert wasteland. Do the doorways recently discovered on the planet's surface lead to an existential lesson for mankind?
Alien Disclosure Files airs on Sky History at 11:30 PM, Wednesday 30 September.
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News ➝ Current Affairs
Documentary