A solid-gold cauldron found at the bottom of a lake seemed at first to be a 2,000-year-old Celtic treasure, but further investigation led to the discovery of a plot by Heinrich Himmler and a covert ... more 
A solid-gold cauldron found at the bottom of a lake seemed at first to be a 2,000-year-old Celtic treasure, but further investigation led to the discovery of a plot by Heinrich Himmler and a covert Nazi cult. less 
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Smithsonian Channel
Thu, Apr 17, 2014 2:02 PM EDT