Assertion: volcano's activity | /r/HasProperty | common
Facets:
value: at many calderas
type: LOCATION
Source sentences:
text: Earthquakes, ground cracks, uplift or subsidence of the ground, and thermal activity such as hot springs, geysers, and boiling mud pots are common at many calderas.
text: As is common with earthquakes at volcanoes around the world, seismic activity at Changbaishan often occurred in swarms, especially from 2002 to 2003, when hundreds of seismic events were sometimes recorded within a single day (figure 4, table 1).