Secrets Underground

7:00 PM to 8:00 PM

Wednesday 9 October

Rocky Mountain Monsters

Season 1 Episode 5 of 8

Rob Nelson examines bizarre markings that suggest a violent clash between prehistoric beasts, and in California, he investigates whether a strange lake might be home to alien life

Secrets Underground airs on Discovery History +1 at 7:00 PM, Wednesday 9 October. (Subtitles.)

Topics