"Oh volcano exploded, his home is under 5 ft of ash."
"Gotcha, mail him the copy"
What you need is "pyroclastic event" insurance to cover you for ash and lahar.
/ It cost something like $15/year when I lived in Seattle.
// The macOS spell checker doesn't know "lahar."
- get insurance to cover you for X
- get hit by X
- realise you actually got hit by Y after reading the policy small print (or you really did get hit by X, but your policy only covers you for Y)
Getting something like Volcano Insurance requires some specific foresight, I would be slapping myself on the back if my house was covered in volcanic ash right up to the point when I got on the phone to my insurance company to make a claim.