Csx transportation hi-res stock photography and images - Alamy
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Is it safe to tunnel in earthquake-prone areas like LA? - Curbed LA
List of tunnels in California - Wikiwand
Study finds rail tunnel would reduce LA-San Diego travel time
The ghost tunnels of the old Hill Street subway station in Los Angeles
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L train tunnel repairs completed ahead of schedule - Curbed NY
Study shows best route for Del Mar train tunnel - The San Diego
Tunnel Travel in Loleta - Redheaded Blackbelt
The Great Wall of Bunker Hill, Abandoned L.A. subway tunnels, and
Tunnel Travel in Loleta - Redheaded Blackbelt
Union Pacific freight train stuck in Newhall tunnel; passenger
MAHANOY TUNNEL STILL IN USE 150 YEARS LATER; RUNS UNDER ROUTE 54
Illinois Tech's CARNATIONS named Tier 1 UTC
A new train tunnel across the bay? Here are early maps