Magma moving beneath a volcano can make the ground rise, sink or shift sideways. Measuring these changes gives scientists clues about where magma is stored and how it travels. A study published in Geodesy and Geodynamics used satellite radar to examine the November 2025 eruption of Hayli Gubbi in Ethiopia's Afar Depression. Hayli Gubbi and nearby Erta Ale are separate volcanoes within the same volcanic zone, where three tectonic plates are pulling apart.