The earliest tunnels in Southern California were built for shelter, or mining purposes, but as civilization encroached, the ...
The San Diego & Arizona Eastern Railway (SD&AE) built an amazing 21 tunnels on their line from San Diego to El Centro — the longest tunnel at 2,527 feet. Completed in 1919, the SD&AE was known ...
In San Diego County, some of the oldest train tracks and rail lines date back over 140 years. The Southern Pacific and Santa ...
Harriet Tubman has long been known as a conductor on the Underground Railroad leading enslaved Black people to freedom. Less ...
Our work in 2024 has changed laws and held public officials accountable. Here's what to know about The Arizona Republic's ...