This would be an extreme event if it occurred - which it hasn't - but it's not as far-fetched as it sounds.

I'd heard about the possibility of Jin Shan erupting near Wan Li, now there's talk of Yang Ming Shan, with the discovery of "a magma chamber only 8 kilometers underneath the Datun volcano group".

It's stable, but if it did erupt then it would "directly affect Taipei's Shilin and Beitou districts".