Writer-videographer Jock Doubleday takes you on a journey into the distant past.
"On three continents -- Eurasia, Africa, and North America -- I've found only terraforming. I haven't been able to find any natural [structural] geology. So I'm willing to bet that all of the continents, all six continents, were terraformed in the distant past."
(start minute 1:43)
"The Terraforming of Terra - Architecture of the Hills, Part 4, Tao of Flow, April 28, 2020"
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https://www.youtube.com/watch?v=43ghLV8bMI8