Generally speaking, it's a great idea to be as far away from an erupting volcano as possible. That's just common sense. There have been far too many tragedies as a result of volcanos, and if you're too close when they blow their tops, well, there's not much you can do about it.
As if we needed any reminders of that, a new study just dropped that suggested the residents of Pompeii and Herculaneum were snuffed out in a matter of 15 minutes when Mt. Vesuvius erupted in 79 AD.
Which is why it's more than a little odd to see people trying to get closer to an eruption in Iceland.