Members of Greece's military geographical team conduct geological measurements, to evaluate potential structural changes due to the ongoing seismic activity on the volcanic island of Nea Kameni, Greece,

The latest of hundreds of earthquakes rattled the volcanic Greek island of Santorini on Tuesday after the strongest one so far with magnitude 5.3. Medical staff staged a hospital evacuation drill as scientists say it's unclear whether the weeks of highly unusual seismic activity precede a larger quake.

Based on the available data, this activity is due to a combination of tectonics and deeper magmatism, scientists said

Greece’s chief seismologist says that while earthquake frequency around Santorini has slightly decreased, the situation remains unpredictable for the coming weeks. Following swarms of undersea tremors,