Secrets Underground

Mystery Of The Serpent Mound

Channel
Discovery .Science

Starts
Mon 31 Aug 2026, 14:00

Ends
Mon 31 Aug 2026, 15:00

Category
News & Documentary

When is Secrets Underground next on TV?

Secrets Underground is on now on Discovery .Science and ends at 15:00.

What channel is Secrets Underground on?

The next showing is on Discovery .Science.

Is Secrets Underground on TV tonight?

Yes — it is on tonight at 21:00 on Discovery .History, ending at 22:00.

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What channel?
Discovery .Science

Start time
14:00

Ends
Mon 31 Aug 2026, 15:00

Channel numbers

SkySky Q / Satellite167

Channel numbers may vary by region, package or device.

About this programme

Rob Nelson investigates mysterious tunnels under Denver's airport. Plus, in Ohio he tries to uncover the secrets of a giant serpent-shaped mound.

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