In San Diego County, some of the oldest train tracks and rail lines date back over 140 years. The Southern Pacific and Santa ...
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 ...
The earliest tunnels in Southern California were built for shelter, or mining purposes, but as civilization encroached, the ...