Powerful 7.8 magnitude earthquake caused an avalanche on the mountain . At least 18 people have died and more than 30 injured on the mountain . There are reports the avalanche has killed people in tents at base camps . The earthquake - country 's worst in 81 countries - has killed at more than 1,300 .
Powerful 7.8 magnitude earthquake caused an avalanche on Mount Everest . At least 18 people have died and more than 30 injured on the mountain . There are reports the avalanche has buried people in tents at base camp . The earthquake - Nepal 's worst in 81 years - has killed at more than 1,300 .