Hidden Tunnels, Bugs, and Bigamy: A Strange and True D.C. Story: "Reports indicated that the tunnels were long and extensive – that they may have reached as far as Rock Creek Park. Some electric lighting was discovered inside. For days, wild theories abounded – was it a Confederate soldier hideout? A stop on the Underground Railroad? A liquor depot for bootleggers? A counterfeiter’s lair? Or maybe a secret laboratory for 'Dr. Otto von Golph’s' experiments?