Meanwhile, Nepali officials conceded they had made mistakes in their initial response to a massive earthquake that has killed more than 4,700 people, as survivors stranded in remote villages and towns waited for aid and relief to arrive on Wednesday.

The government has yet to fully assess the devastation wrought by Saturday's 7.9 magnitude quake, unable to reach many mountainous areas despite aid supplies and personnel pouring in from around the world.

READ MORE: Rescuers struggle to deliver aid to remote areas in Nepal
Anger and frustration was mounting steadily, with many Nepalis sleeping out in the open under makeshift tents for a fourth night since Nepal's worst quake in more than 80 years.

"This is a disaster on an unprecedented scale. There have been some weaknesses in managing the relief operation," Nepal's Communication Minister Minendra Rijal said late on Tuesday.
 "We will improve this from Wednesday" Prime Minister Sushil Koirala said on Tuesday the death toll could reach 10,000, with information on casualties and damage from far-flung villages and towns yet to come in.

MUST READ: Nepal PM puts earthquake death toll at 10,000

That would surpass the 8,500 who died in a 1934 earthquake, the last disaster on this scale to hit the Himalayan nation of some 28 million people that sits between India and China.

The region at highest risk for landslides and mudslides is the mountainous area along the Nepal-Tibet border, north of Kathmandu and west of Mount Everest, directly above the fault rupture, according to researchers at the University of Michigan (U-M).

U-M geomorphologist Marin Clark and two colleagues have assessed the landslide hazard in Nepal following Saturday's magnitude-7.9 earthquake.

They looked for locations where landslides likely occurred during the earthquake, as well as places that are at high risk in the coming weeks and months.

The analysis found tens of thousands of locations at high risk, Clark said.

In pics: The aftermath of deadly Nepal earthquake

"The majority of them, we expect, have already happened and came down all at once with the shaking on Saturday," she added.

But there would still be slopes that had not yet failed but were weakened. So there would be a continued risk during aftershocks and with the recent rainfall, and again when the monsoon rains arrive this summer, cited Clark.

Information from the U-M-led study is being used to help prioritise both satellite observations and the analysis of data from those satellites, urged Clark, an associate professor in the U-M Department of Earth and Environmental Sciences.

Latest News from World News Desk