In December, tech billionaire Elon Musk and his tunneling startup, The Boring Company, unveiled a mile-long tunnel beneath Hawthorne—a prototype of an undergroundtransportation system called “Loop.”
Musk has repeatedly suggested that a network of subterranean thoroughfares would solve Los Angeles’s well-known traffic woes. But the day after showing off the test tunnel, he addressed a different LA concern: earthquakes.
“Are tunnels safe in an earthquake?” Musk wrote on Twitter. He attached a brief primer on seismology and tunnel design from the Boring Company website.
According to that blurb, tunnels are “some of the safest places to be during an earthquake.”

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