TOPSHOT - Mount Ibu spews thick smoke in Gam Ici, North Maluku, on May 13, 2024. A volcano in eastern Indonesia erupted on May 13, spewing a huge ash tower more than five kilometres (three miles) into the sky after authorities raised its alert level to the second-highest last week. (Photo by Azzam Risqullah / AFP) (Photo by AZZAM RISQULLAH/AFP via Getty Images)
What is 'cold lava flow?': See how it devastated Indonesian island

Heavy rains triggered flash flooding in Sumatra, Indonesia, killing at least 37 people. The downpour also triggered a 'cold lava flow' from an active volcano, sweeping away more than 100 homes.

00:35 - Source: CNN
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TOPSHOT - Mount Ibu spews thick smoke in Gam Ici, North Maluku, on May 13, 2024. A volcano in eastern Indonesia erupted on May 13, spewing a huge ash tower more than five kilometres (three miles) into the sky after authorities raised its alert level to the second-highest last week. (Photo by Azzam Risqullah / AFP) (Photo by AZZAM RISQULLAH/AFP via Getty Images)
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