I assume this is Iceland???
This could be very scary because if Katla erupts, we’re talking an eruption on the scale of Mt. Pinatubo in terms of volcanic ash output—probably even more. Not only would it interrupt air travel in all of Europe, but it would cause substantial cooling of the Northern Hemisphere, which means more severe winters (e.g., California could experience another winter of way over average precipitation and Europe could get really snowed in).