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Masaya Volcano

Oct. 16, 2026

Satellite measurements of Nicaragua’s Masaya volcano suggest magma is entering one reservoir as another drains, offering clues that could improve monitoring for future hazards.

About Masaya Volcano:

  • It is an active basaltic shield-like caldera volcano located in Nicaragua in Central America, about 20 km southeast of the capital city, Managua.
  • It forms part of the Central American Volcanic Arc, formed by the subduction of the Cocos Plate beneath the Caribbean Plate.
  • The caldera contains multiple collapse craters and cinder cones, with the currently active Santiago crater.
  • The volcano is known for its persistent lava lake and high degassing rates.
  • Activity is typically Strombolian to Vulcanian with ash emissions, lava fountains, and occasional lava flows.
  • The current activity at Santiago crater includes a convecting lava lake and continuous gas emissions.
  • In 1979, Masaya became Nicaragua's first national park. It is officially called Masaya Volcano National Park (Parque Nacional Volcán Masaya).

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