Entraban por horas… y el libro decía que faltaban días

⛰️ In 1981, a crew opened a hydroelectric tunnel inside an Andean mountain, believing they were facing only rock, cold, and the usual construction delays. But by the third week, the control stakes were no longer aligned, and the tunnel's alignment began to reveal something no blueprint could account for. 📐 An engineer decided to treat each anomaly as what it initially appeared to be: an instrument error, a misreading, shift fatigue, or camp disarray. So he took notes, compared schedules, checked compasses, repeated sightings, and kept his own tally of lost workdays and impossible meters. The problem was that the errors weren't scattered… they were all happening at once. 🕰️ The workers would enter the tunnel face for short tasks and return, according to the clock, days later, with no memory of the gap between one hour and the next. Meanwhile, the logbook accumulated days that no one could explain, and the instruments began to malfunction, always on the same side: where the air grew colder and the rock stopped reflecting the same path twice. 🧭 This story follows a field investigation told from a technical standpoint, not from a place of easy outcry. Here, fear doesn't arise from what is seen, but from what is measured: marks that change, times that don't add up, readings that correct themselves, and a mountain that seems to exact a price every time someone insists on returning to the same spot. 📚 If you're drawn to long, understated narratives with the kind of horror that comes from the facts rather than the shadows, this story will stay with you long after the end. 🔎 This video is for educational, narrative, and general informational purposes.