Iceland's location on top of two tectonic plates makes it an incredible, geologically diverse environment. Home to 30 volcanos, the country is fairly used to them getting moody from time to time. Anyone who traveled or tried to travel to Europe in 2010 would be painfully familiar with Eyjafjallajokull Volcano. It grounded flights within the continent for weeks on end after an eruption spewed ash into the air, which posed a danger to airplane engines.
Baroarbunga Volcano is Iceland's second largest, and back in 2014 it started erupting again. Significant amounts of ash were not produced, which is why many people haven never even heard of it. But those who have done their research end up wanting to visit. We'd suggest being careful - the eruptions damaged Iceland's air quality with toxic sulphur dioxide and you never know when it might erupt again.