For 10 days, Nepali hydropower worker Sanjay Sah survived in darkness inside a flooded tunnel, drinking muddy water and losing all sense of time as he desperately prayed for rescue. When a disaster response team finally pulled him to safety on September 4, Sah’s first question showed how deeply the ordeal had disoriented him. “When I was rescued I first asked, how many days has it been?” Sah, aged 30, said in an interview, while on his way back home in Saptari district on Sunday. “He said that...