Category: Hidden Cities

• The Great Los Angeles "Lizard People" Tunnels

  The Great Los Angeles "Lizard People" Tunnels theory held that an ancient reptilian or lizard-symbol civilization had constructed a vast subterranean city beneath downtown Los Angeles, complete with catacombs, treasure chambers, and secret passages. The best-known modern version entered wide circulation in January 1934, when mining engineer G. Warren Shufelt claimed that underground structures beneath Fort Moore Hill and central Los Angeles could be detected with a specialized "radio X-ray" device. In the story’s strongest form, the tunnels belonged to a prehistoric “golden city” inhabited by hidden lizard people or a lizard-venerating race that retreated underground after catastrophe. The theory became one of Los Angeles’s most durable underground-city legends and a precursor to later reptilian-subterranean narratives.

• The Opium Den "Tunnel System"

  This theory held that Chinatowns in cities such as London and San Francisco were underlain by secret tunnel systems used to hide opium traffic, smuggle people, and maintain networks of white slavery beyond the reach of police. In its strongest form, the theory imagined entire underground labyrinths of vice, kidnapping, and racialized criminal conspiracy. The documented record clearly shows that Western cities did contain opium houses, prostitution fears, and anti-Chinese panic, and that tunnel legends became a repeating feature of Chinatown folklore across North America. What remains far less secure is the claim of vast underground tunnel systems built and used on the scale imagined in popular rumor. In most cases, historians treat these stories as urban legend amplified by racism and sensational tourism.