Pompeii comes to mind.
Yellowstone is due to erupt ?
Among many other options.
The other (more likely) options are that this volcano’s BIG BROTHER (Katla) will go off, as it has each time Eyjafjallajokull went off in the past.
Recent reports are that the volcanic activity at Eyjafjallajokull are diminishing somewhat.
No one really knows what will happen.