Nepal tunnel rescue faces unprecedented challenges, says expert

Rescue crews in Nepal are racing to reach hundreds of workers believed trapped in tunnels at a hydropower project after catastrophic flooding. Tunnel engineering professor Arnold Dix, who helped rescue 41 Indian workers from a Himalayan tunnel collapse in 2023, told Al Jazeera the operation is unlike any rescue he has ever seen, with rocks "the size of cars" blocking the way. He said crews have found the tunnel entrance, established drainage and are using explosives to clear massive boulders — a rare and risky approach in a rescue operation. Dix described a "Goldilocks zone" inside the power …

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