Volcanoes can look like small mountains or hills ... Clouds of ash can rise miles into the sky and block out light from the Sun, changing temperatures across the land and damaging aeroplanes ...

A volcano is an opening in the Earth’s crust ... Clouds of ash can rise miles into the sky and block out light from the Sun, changing temperatures across the land and damaging aeroplanes ...

Lava is molten rock from a volcano that reaches the Earth’s surface. Liquid rock below the Earth’s surface is referred to as magma. More than 50% of the world’s active volcanoes above sea ...