California town blames Area 51, grenades, mines for unexplainable daily booming

There is much speculation about the source of a periodic booming noise.
(Image credit: Screenshot/ABC10.com)

Every weekday between 11 a.m. and 2 p.m. there is a loud boom in Sonora, California, and everyone has a theory about where it's coming from — but no one has an answer.

"Out there at Columbia, there are some mines," one resident told ABC News while another claimed that "it has come from Area 51."

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Jeva Lange

Jeva Lange was the executive editor at TheWeek.com. She formerly served as The Week's deputy editor and culture critic. She is also a contributor to Screen Slate, and her writing has appeared in The New York Daily News, The Awl, Vice, and Gothamist, among other publications. Jeva lives in New York City. Follow her on Twitter.