What on Earth?
6.4Returning SeriesDocumentary

What on Earth?

Satellites orbit Earth at 17,000 miles an hour, capturing images of our world that are breathtaking, but some are bizarre. This unique perspective reveals objects that seem to make no sense & phenomena that defy explanation. Such images force the question, what on Earth is that?

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5. The Cave to Hell

The Cave to Hell
0.0Jul 11, 2019 · 44 min

When a sinister cave is discovered in a remote corner of Iceland, experts uncover a secret underworld tunneling to unknown depths, and using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.