These are fearful times on the highest mountain in the world.
The devastating earthquake that hit Nepal on Saturday set off avalanches that left large numbers of climbers dead, missing, injured or trapped on Mount Everest.
And aftershocks, including a strong one Sunday, are continuing to send snow and rocks thundering down the mountainside, complicating rescue efforts.
"We were sitting here in base camp, feeling the situation was getting better," said climber Carsten Pederson.
"And then suddenly, we felt the aftershock," he told CNN on Sunday. "And immediately after the shock, we hear avalanches from all the mountains around us."
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