Rescuers trying to clear a blocked tunnel in Uttarakhand. Photo: BBC
Emergency response has been deployed in searching for as many as 200 people still missing after a Himalayan glacier fell into a river, triggering a huge flood in northern India that killed 18 persons.
The floodwaters burst open a dam and a deluge of water poured through a valley in the state of Uttarakhand on Sunday.
Most of the missing are believed to be workers from two hydropower plants.
The BBC reports that the rescue effort is focused on several sites, including a tunnel more than 200 metres (656ft) long.
More than 30 people were apparently trapped inside when the torrent of icy water swept down the valley, carrying rocks and earth as it gathered speed.