Masaya Volcano shows signs of magma accumulation in Nicaragua

Researchers have identified signs of renewed magma accumulation within the Masaya volcano in Nicaragua. A study published in Geophysical Research Letters, utilizing Sentinel-1 satellite radar data, reveals that the volcano possesses a more complex system than previously understood, featuring at least two active magma reservoirs.

Between 2018 and mid-2022, the central reservoir north of the Santiago crater showed signs of ground subsidence, suggesting magma was moving away. However, from mid-2022 to 2024, the ground began to rise again, indicating the reservoir is refilling. Additionally, continuous subsidence around the Santiago crater suggests the presence of a second, shallower magma reservoir located approximately 200 meters below the surface.

While the volcano, often called the ‘Mouth of Hell,’ is located only 20 kilometers from Managua—home to approximately two million people—and attracts thousands of tourists annually, scientists emphasize there is no indication of immediate danger. Monitoring these complex underground channels remains critical for predicting potential future eruptions.