An odd earthquake swarm on the border of Germany and the Czech Republic may hint at magma moving deep below the surface.
The quakes are in Vogtland, a region known for regular, low-level earthquake swarms. These swarms tend to last several weeks and lead to mostly mild shaking. The largest known quakes from the area are around magnitude 4.5, said Torsten Dahm, a geophysicist at the GFZ German Research Centre for Geosciences who's leading a project monitoring this region.
