Tracing the deadly path of the Nepal-Tibet flash flood

A big flood destroyed many houses in Nepal and Tibet recently.

The flood started high up in the mountains near Mount Everest.

Experts say that a lake of ice broke and the water ran down.

BBC has looked at videos to find out what happened.

Many people had to run away from their homes very fast.

Luckily, no people were killed in this disaster.

But the flood destroyed a school and a small power plant in the village.

Researchers think that climate changes make such floods more common.

They use satellites to look at the damage from space.

It is important to help people who lost everything in the water.