Just been having a play with volcanoes (thanks all for the very useful info- I wasn't quite sure where to start before)

Anyway I can get the to work from descr_disasters.txt with the random date set by frequency and they have the graphic I think I've seen before and damage nearby armies,

the ones I've set in descr_event.txt have an over the top sparkler effect graphic and do absolutely no damage to nearby units, which is rather a shame!


Is there any way to get eruption on a set date and do damage?