The Serpent City Below Los Angeles by Robert Sepehr (3/11/2022)

In the 1933, mining engineer George Warren Shufeld related stories, told to him, of Hopi legends describing a race of "Serpent People" (not reptilian, but so-named for their reverence of the lizard) who, 5,000 years ago, built several great underground cities near the Pacific Coast, including one beneath Los Angeles. The cities were said to have been built underground as protection against great cataclysmic fires on the surface.