Season 4 Episodes20
Cast2
S
Steven Kearney
Narrator

Andrew Gough
Self
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Ranked #2 of 20 in Season 4•+0.9 vs season avg
Man-made islands are spotted near a North Korean missile facility. When something unexpected is found in a remote desert, experts investigate a lost city of giants. A strange discovery in Siberia could reveal a mission to the center of the earth.
Steven Kearney
Narrator

Andrew Gough
Self
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"North Korea's Forbidden Islands" is episode 13 of What on Earth? season 4. It scored 7.7/10 from 10 votes, ranking #2 of 20 episodes this season (season average 6.8). It aired on January 23, 2018.