civilext on Instagram: "A Railway That Defied Granite And Time—Watch How The Tehachapi Loop Became One Of The Boldest Feats Ever Built In 1876! Dive Into The Untold Story Of The Tehachapi Loop—Carved Through Solid Granite In 1876 By 3,000 Chinese Workers Armed With Nothing More Than Gunpowder And Shovels. This Iconic Spiral Track Still Stands As One Of The Greatest Railway Achievements In The World. 👉 Follow @civilext_ for more engineering marvels #engineering #civilengineering #railwayengineer