Explainer Zone™ on Instagram: "Hidden in the dry hills of California lies one of the most brilliant engineering achievements of the 19th century — the Tehachapi Loop, completed in 1876. This massive spiral track was created to help trains climb steep mountain grades that were once impossible for locomotives to scale. The track stretches about 1,200 meters and loops over itself, rising nearly 23 meters in elevation in a single circle — meaning when long trains pass through, the locomotive often c

Innoverse on Instagram: "The Tehachapi Loop is one of the greatest railway engineering feats ever built. Completed in 1876, this massive spiral track was carved through solid granite by more than 3,000 Chinese laborers armed with nothing but gunpowder, picks, and shovels. Their skill, endurance, and precision made it possible for trains to climb steep mountain grades — a design still used nearly 150 years later. Today, the Tehachapi Loop stands as a symbol of human ingenuity, groundbreaking engi