@datamineai on Instagram: "Most people drive past it without knowing what they’re missing. The Tehachapi Loop is a railway spiral that makes trains pass over themselves to climb mountains. Built in 1876, it’s a 0.73-mile curve that gains 77 feet in elevation while keeping the grade manageable. Long freight trains literally cross over their own tracks. The engine passes above the rear cars of the same train. Nearly 40 trains use this loop every single day. A 150-year-old solution that still works