Secrets Underground

4:00 PM to 5:00 PM
Thursday 12 September
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America's Buried Massacre

Season 1 Episode 4 of 8

Rob Nelson searches for a mass grave that could harbour a dark secret. Plus, a giant lake seems to be disappearing, and Rob set off to find out why

Secrets Underground airs on Discovery History at 4:00 PM, Thursday 12 September. (Subtitles.)
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