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Discovery .ScienceThu 29 Oct · 04:00–05:00News & Documentary

Secrets Underground

California's Hidden Doomsday

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Secrets Underground artwork

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About this programme

Rob heads to California to investigate a network for major fault lines that could set off a mega-quake. Plus, he explores a mysterious sinkhole.

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Next episodes and editions

Future listings with the same programme title, excluding this episode.

Secrets UndergroundAmerica's Buried Massacre · Discovery .Science · Wed 28 Oct, 04:00–05:00›Secrets UndergroundRocky Mountain Monsters · Discovery .Science · Wed 28 Oct, 05:00–06:00›Secrets UndergroundDiscovery .Science · Wed 28 Oct, 14:00–15:00›Secrets UndergroundKing Solomon's Treasures · Discovery .History · Wed 28 Oct, 21:00–22:00›Secrets UndergroundGreat Lakes Bermuda Triangle · Discovery .Science · Thu 29 Oct, 13:00–14:00›Secrets UndergroundLegend Of The Nazi Gold · Discovery .Science · Thu 29 Oct, 14:00–15:00›Secrets UndergroundTesla's Final Secrets · Discovery .History · Thu 29 Oct, 21:00–22:00›

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