Two active magma reservoirs may lie beneath Masaya volcano, near 2 million people

Masaya volcano in Nicaragua sits within 13 miles (21 kilometers) of 2 million people and is a popular tourist destination due to its lava lake. Penn State researchers recently found evidence of two new magma sources under the active volcano, highlighting what they called the critical importance of understanding transitions in volcanic behavior and shallow magma processes, especially when they potentially pose hazards to local communities.