Nepali families were holding symbolic funeral ceremonies to "liberate the souls" of loved ones missing since deadly flash floods swept away their villages and homes in the Himalayan region a week ago.

Emergency teams have recovered more than 1,100 bodies, as nearly 4,000 people remain missing after the gigantic wave of freezing water, rocks and debris triggered by a high-altitude glacial collapse roared down the China-Nepal border on 26 August, causing grave damage to much of what was in its path.

After days of searching shelters and mortuaries, relatives of some of the missing lost hope and began conducting last rites.

"We had to do this to set his soul free, so that he is at peace and happy wherever he is," said Dolma Newar Tamang, flanked by her sobbing son, at a funeral for her husband.

He had been en route to China when the disaster struck. "I saw the news and called him," she said. "I called repeatedly, but he never picked up."