Video: The disaster when the volcano on the island of Bali wakes up

Indonesia's Bali island is home to 4.2 million people, authorities have to evacuate 75,000 people in dangerous areas around the Agung volcano.

Simulated Agung volcano eruption.

Located 48km southwest of the volcano is Denpasar, the capital of the island and the crowded international airport. The volcano has been dormant for nearly five decades but 700 tremors were discovered one day last week.

Indonesian government experts said that this is a sign of Agung volcano erupting. If a volcano erupts, a superheated air called a lava flow will endanger anyone nearby.

1. Dangerous Indonesian volcano rocked 500 times / day