THE POPULOUS BIBLE
C.33 Volcano
Volcano is a offensive spell that you can against your enemies. You recieve Volcano from a Vault of Knowledge on level 21: "Fractured Earth". You can only store 1 shot of this spell at once.
The Volcano spell is sometimes in the Default Multiplayer Restrictions and is a devastating spell when casted on a settlement.
The range is pretty low, so sometimes it's good to be in a Balloon or on high ground.
A huge cone will come up destroying buildings that are close to it. Then release a whole lot of lava around the base, burning every unit and building it touches in a large area. This spell lasts for like 13 seconds (once you cast it, the ground will shake and only after 4 or 5 seconds the cone of the volcanowill start growing).
The volcano's lava will create damaged terrain, which can not be sink by any way.
If the lava touches water, it will create damaged land.
When someone casts a volcano on your settlement, you should run the majority or your population to a safe spot (this can and should be done, and most of the times you have time to save most of the units). Still, the best way is actually avoiding a volcano being casted in the middle of your base!