Don't be mistaken: they are many.

     When the first of them erupts, the last one erupts too, but there is only one eruption. Since all intermediate eruptors are usually checked out by the mayor, you have no choice but to revert the first crater to its previous revision.

     And then blow in it so it grows bigger and bigger. At first, you may think a small one would be enough for them.

     Don't be mistaken: they are many. They could be a threat for your people.

     The garage is the only safe place around. Who dares to venture outside meets nothing but violence and destruction.