It's after more than 100 homes and buildings were destroyed after hours of heavy rain caused floods, mudslides and cold lava to slide down Mount Marapi - the most active volcano in Sumatra.

The ash was from cold lava, known as "lahar" in Javanese, a hot or cold mixture of water and rock fragments that flows down the slopes of a volcano and typically enters a river valley. Cold lava ...

Volcanos are releasing ash and smoke into the atmosphere on three continents. That might be making you think back to your elementary school science class when you probably studied volcanoes and lava.

She told me the news may be using “cold lava” to describe a lahar. That’s a mix of water and rocky debris that sometimes whooshes down the side of a volcano. It’s also called a debris flow ...

At least 37 people have been killed, and more than a dozen injured on the Indonesian island of Sumatra after heavy rains triggered flash flooding and a cold lava flow from an active volcano ...

Ol Doinyo Lengai, a volcano in East Africa, stands out for its unique natrocarbonatite lava, which is black, cool, and flows like motor oil. This volcano, also known as the 'Mountain of God', is ...

Pele’s hair can be so thin that you can think of it as natural fiberglass. You can also get extremely bubble-rich, glassy material called reticulite. There are even some lava fountains that can create ...

Flash floods, landslides and a stream of cold lava from an active volcano left at least 43 people dead and 19 missing on the Indonesian island of Sumatra over the weekend. Images and videos shared by ...