'It's like layer upon layer of miracles': How Nepal flood survivors were rescued from tunnel - BBC News

From searching for a buried tunnel entrance to blowing up rocks the size of cars, rescuers had to surmount multiple challenges to reach survivors.

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Watch: Moment workers are rescued from Nepal tunnel

A tunnelling expert involved in the rescue operation at a blocked Nepalese hydropower tunnel has described to the BBC how they managed to reach survivors.

Arnold Dix has been advising Nepal's hydropower authorities on how to dig through the blocked tunnel to Trishuli 3A Hydropower Station, which was one of several stations hit by last week's massive flash flood on the Nepal-Tibet border.

"It's like layer upon layer of miracles" that they found two men on Friday, he said, given the multiple challenges that they faced.