A day after 12 people, who were trapped at a tunnel in Uttarakhand's Chamoli, were rescued, operations were underway on Monday to rescue about 35 people trapped in another tunnel, ANI reported. Around 300 security personnel of Indo-Tibetan Border Police (ITBP) were deployed to clear the tunnel, said Vivek Pandey, spokesperson of the ITBP.

Also read: Raging muddy waters and shaking ground is all that Uttarakhand survivors remember

The flash flood triggered by glacier breach damaged two power projects – NTPC’s Tapovan-Vishnugad hydel project and the Rishi Ganga Hydel Project in Uttarakhand's Chamoli district, PTI reported. Scores of labourers were trapped in tunnels as the waters came rushing in.

12 people were rescued from the smaller tunnel in Tapovan yesterday, Uttarakhand DGP Ashok Kumar said.  Efforts are underway to open the bigger tunnel. Debris are being removed from it, he added.

Uttarakhand's Chief Minister Trivendra Singh Rawat on Monday said 203 people were missing, including 11 bodies that were recovered on Sunday. As per estimates, 35 people were stuck in the second tunnel, the CM added, according to ANI. 

Aparna Kumar, DIG Sector HQ, ITBP Dehradun on Monday said the bigger tunnel was cleared till 70-80 metre, ANI reported. Debris had blocked it and it was being cleared by JCB. 

"It is around 180 m long and around 30-40 workers are trapped since yesterday," she said. 

Chamoli Police on Monday shared pictures of the rescue work underway at the tunnel.

"Rescue operation is underway for people trapped in the tunnel. Efforts are on to clear the tunnel with the help of JCB machine," the police tweeted.

News agency ANI shared pictures and video of the rescue operation at the second tunnel.

Also read: Uttarakhand glacier breach: 11 bodies recovered, search on for 203 missing people

The flood was triggered in the Alaknanda river system after a portion of the Nanda Devi glacier broke off on Sunday morning.