Subterranean Seoul and Railway Revealed
Hidden Beneath the Cities · Season 1 · Episode 9
Discover a massive underground chamber hiding under the Seoul subway. Visit a medieval knight's limestone tomb in Poland, examine Roman ruins beneath a church in England, and ponder the identity of a 10-million-year-old fossil in Los Angeles.
Episode Details
Air date, runtime, timezone, and episode position.
Season
1
Episode
9
Air Date
22/May/2026
Air Time
21:00
Runtime
45 min
Overview
Episode summary.
Discover a massive underground chamber hiding under the Seoul subway. Visit a medieval knight's limestone tomb in Poland, examine Roman ruins beneath a church in England, and ponder the identity of a 10-million-year-old fossil in Los Angeles.
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