Romanian climber Alex Gavan said on Twitter that there had been a "huge avalanche" and "many, many" people were up on the mountain."Running for life from my tent," Gavan said. "Everest base camp huge earthquake then huge avalanche."
Another climber, Daniel Mazur, said Everest base camp had been "severely damaged" and his team was trapped."Please pray for everyone," he said on his Twitter page.
An earthquake measuring 7.9 magnitude struck west of Kathmandu causing buildings to collapse, killing at least 108 people, injuring more and leaving a pall of dust over the city.