Nepal tunnel rescuers hunt for survivors with rafts and drone

Eight days on from the deadly flash floods on the Nepal-Tibet border, rescuers were still looking for survivors who are thought to be trapped inside tunnels along Nepal's Trishuli River. At least 1,200 people have died and thousands more are missing after a "glacial collapse" high in the Himalayas, led to floodwater and debris sweeping through roads and villages. B BBC South Asia correspondent Azadeh Moshiri travelled to one of the sites of one of the tunnels.