They ,the scientist , say in your lifetime? An insurance policy would read something like this ,covered only if 100 miles away from lava zone ,struture damage from pending quakes at R SCALE level 2 or under. Flying boulders are part of natures way of saying leave now,any damage from flying debree is discussed in clause four of the manual and only covered if you are 100 miles away from affected zone .Absolutely no bathing in any natural fed spring water , revisit video "Volcano" as this could happen and is discussed and is posted in clause four of manual .Driving away from Volcano is recommended if ground is shaking ,quicken your speed if you see a lg dust cloud in your rearview mirror ,only cover car damage if your car is a tank or plated steel added to exterior has been conducted.Approved by the board of Vermont Insurance Board .