Most of the men had travelled hundreds of miles to find employment. Tunnel digging and construction is often dangerous and back-breaking work, but the dozens of labourers working on the Silkyara-Barkot tunnel, high up in the Indian Himalayan mountains, felt they had little choice.
Some had been doing this work for two decades, and a few had come close to disasters before. But none had ever dreamed of what would happen in the early hours of 12 November, when a rumbling noise was the first sign they were in trouble.
