California's Summit Tunnel Crosses the San Andreas Fault, and in 1942 the Army Blew It Shut

California's Summit Tunnel Crosses the San Andreas Fault, and in 1942 the Army Blew It Shut 0:00 Introduction 1:44 Part 1: A Narrow Gauge Road to the Sea 3:49 Part 2: Gas in the Mountain 7:30 Part 3: The Fault Moves Inside the Tunnel 9:39 Part 4: What the Survey and the Scientists Found 12:13 Part 5: Closed by a Storm, Sealed in 1942