Uttarakhand flash floods: Drones, remote-sensing equipment being used to locate those trapped

With more than three days since the flash flood struck Chamoli district of Uttarakhand, hopes of finding any more survivors at the Tapovan and Rishi Ganga power project sites dimmed as rescue agencies continued with their operations on Wednesday. (Express photo by Gajendra Yadav)

Site of the Tapovan hydel project as rescue works are underway on Wednesday after a glacier broke off in Joshimath causing massive flood in Dhauli Ganga River, in Chamoli district of Uttarakhand. (Express photo by Gajendra Yadav)

So far, 32 bodies have been recovered in the region, with over 170 people still missing.(Express photo by Gajendra Yadav)

Rescue agencies are now deploying advanced technologies such as a helicopter carrying a laser with electromagnetic pulse imager for an aerial survey over the tunnel, and a camera drone to be sent inside the tunnel. (Express photo by Gajendra Yadav)

At the Tapovan tunnel, the centre of the rescue operations where 35 people are feared trapped, there has been no breakthrough so far, despite excavators working round the clock to remove the slush in the 1.9-km tunnel. (Express photo by Gajendra Yadav)

Helpdesk set up for families of missing people at Tapovan. (Express photo)

Raini Palli village that has been disconnected from the rest of the Chamoli district by land after a glacier broke off in Dhauli ganga river in Chamoli district of Uttrakhand. (Express photo by Gajendra Yadav)

According to ITBP officials, the India-China border is around 130 km from Raini village. (Express photo by Gajendra Yadav)