Have you ever looked at the list of optional add-ons for your rental car insurance and wondered why they’re offered? Some of them seem outlandish and unnecessary, but in the case of sand and ash protection, if you’re planning to rent a car in Iceland, you might be very glad you took out this extra cover. Here’s why, as part of our guide to sandstorms in Iceland. What are these sandstorms?When we talk about sandstorms in Iceland, we should really be talking about dust and ash as well. Co...