Or burning hot lava pouring down the side of a mountain. But you’re right that there have been news reports that mention cold lava. I talked about what that could be with my friend Katie Cooper.

Cold lava, also known as lahar, is a mixture of volcanic debris such as ash, sand and pebbles that flows down a volcano’s slopes during wet weather.

In these flows, the lava erupts at temperatures of around 1,100 to 1,250°C (2,012 to 2,282°F). At Ol Doinyo Lengai, the lava erupts at a much cooler 510°C (950°F).

Lava and ash continues to spew from the erupting Mount Lewotobi, Flores, as locals fear threat of cold lava flows and flooding. Footage shows the volcano emitting clouds of ash on July 30.

PADANG, Indonesia — Rescuers recovered more bodies Monday after monsoon rains triggered flash floods on Indonesia's Sumatra Island over the weekend, bringing down torrents of cold lava and mud ...

This drone photo shows the damage at a village affected by a flash flood in Tanah Datar, West Sumatra, Indonesia, Monday, May 13, 2024. Heavy rains and torrents of cold lava and mud flowing down a ...

Cold lava, also known as lahar, is a mixture of volcanic debris such as ash, sand and pebbles that flows down a volcano’s slopes during wet weather.