Two Indian air force helicopters and a rescue team scoured the Himalayan region around the Nanda Devi mountain for eight missing climbers without success on Sunday, and survivors are unlikely to be found, two government officials said.
The rescue effort for the climbers from Australia, Britain, the United States and India began on Saturday when they did not return to their base camp, but it may take days to trek to the avalanche-hit area where they were last known to have been.
“The first aerial recce has concluded,” said Mr Vijay Kumar Jogdanda, the top civil servant in the Pithoragarh district of India’s rugged state of Uttarakhand.
“There were only tents spotted, but no human presence. The second helicopter has left for the recce.”
He added that “chances of survival are bleak”, and confirmed the occurrence of an avalanche that is feared to have caught the climbers in the area around India’s second-highest peak.
Officials have declined to identify them.
A team of 10 to 15 rescuers, comprising police, disaster response personnel and administrators has also fanned out to track down survivors, said Ms Tripti Bhatt, an official of the Uttarakhand State Disaster Response Force (SDRF).
The casualty rate in the region is almost five times higher than on Mount Everest, the world’s tallest peak, she added.
Equipment ranging from avalanche gear to drones and satellite phones is on hand for the rescuers, she said.
But, another official said the rescuers would need at least three or four days of walking to get to the avalanche site.
The climbers went missing on the Indian side of the Himalayas near the end of a climbing season that has been particularly deadly.