Dr. Harrison G. Dyar, entomologist and mosquito expert at the Smithsonian Institution, let the speculation continue for a few days -- presumably while wringing his hands and laughing maniacally -- before stepping forward to admit that he had single-handedly constructed the catacombs. The first indication that he was telling the truth, and not just some crazy bug expert, was that the tunnels originated from the backyard of his former residence. But the idea that it was the handiwork of just one guy seemed impossible. The tunnels extended hundreds of feet in length and reached depths of up to 32 feet below the surface. Not only had Dyar done it all by his lonesome, but he'd also kept the project secret, starting work on the tunnels in 1906 and continuing until he moved away from the house in 1916, removing every bit of the dirt himself. In buckets.
"You think the garbage man will suspect anything if I leave this out on the curb?"
Once people got their heads around the fact that one guy had really done this all by himself, the search must have been on for all the dead people he'd dug the tunnels to store. When the tunnels came up clean for dead bodies, officials were forced to accept the fact that they were dealing with the most monumentally bored person on the planet (quite a feat at that time).