The Los Angeles Subway System Was Hiding An Amazing 10,000-Year-Old Secret

Like many large cities, Los Angeles sits on top of a complicated maze of underground subway tunnels. Deep under the streets, this efficient transportation system quickly carries passengers to their destinations throughout the city.

During a recent subway expansion project, construction crews made a discovery that has stunned the scientific community. Read on to learn more about what it was that workers unearthed as they dug into the ground under the City of Angels.

The Westside Subway Extension

A man in a subway train.
Valery SharifulinTASS via Getty Images
Valery SharifulinTASS via Getty Images

The Los Angeles Metro Rail first started operating on July 14, 1990. As the city has grown, so has the number of people using the subway. Because of this, the LA Metropolitan Transportation Authority began an expansion project to add three underground train stations and a new branch of the Purple Line subway.

Even though this project was a massive undertaking, no one expected it to lead to the remarkable discovery that it did.