Global Volcanism Program | Image GVP-04956
A seismogram at the Montserrat Volcano Observatory registers a volcano-tectonic earthquake swarm on August 12, 1995, several weeks after the start of a long-term eruption. Seismic monitoring is one of several tools used to help predict future eruptions and keep tabs on ongoing activity.
Photo by Cynthia Gardner, 1995 (U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.