Something strange is happening beneath a volcano near 2 million people

Scientists have discovered evidence of two hidden magma sources beneath Nicaragua’s Masaya volcano, where satellite observations revealed mysterious ground movements suggesting magma is shifting deep underground. The findings could improve eruption forecasting for the active volcano, which sits near 2 million people and attracts tourists to its spectacular lava lake. Something strange is happening beneath a volcano near 2 million people.

Scientists at Penn State have uncovered evidence of two previously unrecognized magma sources beneath Nicaragua’s active Masaya volcano, raising new questions about how molten rock moves beneath the surface. The discovery is particularly important because about 2 million people live within 13 miles of the volcano, which is also a popular tourist destination. Understanding its underground activity could help scientists recognize warning signs of future eruptions and better protect nearby communities.

Using six years of satellite observations, researchers tracked subtle changes in the ground around Masaya. They discovered that one part of the volcano initially sank before beginning to rise, possibly indicating that fresh magma was entering a deep reservoir. Meanwhile, the ground around its active Santiago crater and lava lake continued to sink, suggesting that a separate, shallower magma reservoir was behaving differently.