Science Channel - What on Earth? Series 2 (2015) Part 8 Lost City of the Kalahari

What on Earth? Series 2 Watching us from space, satellites orbit the Earth at 17,000 miles an hour, capturing images of our world that are breathtaking, and sometimes bizarre. This unique perspective reveals objects and phenomena that defy explanation - massive tsunamis that disappear without trace, a sinister blood-red lake in war-torn Baghdad and a whirlpool in the ocean the size of Connecticut Join experts and witnesses as they investigate and analyse these sites, in an attempt to unravel these mysteries captured from space.

Part 8 Lost City of the Kalahari

January 2002 SeaStar satellite monitoring the world's oceans sees a massive dark blob off the coast of south Florida; a NASA satellite launched in 2002 looks for gravity anomalies on earth and finds an unexpectedly large gravity under the ice of Antarctica; in May 2013 satellite researcher using Google Earth finds spiral formations in the Kalahari desert of South Africa; in April 2013 an image is posted from Holland that appears to show a murder captured by satellite images; an image shows streaks of light and a nearby point of light in the West African Sahara Desert were no light was seen before that disappears the next night.

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