one of the most active volcanos in Iceland - a country that knows a thing or two about volcanos - is about to go off again
Just when you thought that this wretched year couldn't possibly throw any more at us. Let that be a lesson folks, it can always get worse.
Anyway, you might remember the last time that Grímsvötn erupted, because it was only back in 2011 and resulted in the grounding of around 900 flights.
At least no-one is really going anywhere at the minute, so it's not that big a deal, is it?
It's not quite the same as when the catchily titled Eyjafjallajökull volcano went boom back in 2010 and caused 100,000 flights to stay on the deck.
Just ask the people of Scotland how much of a ball-ache that turned out to be.
All of this underground nonsense points to the conclusion that it's building up for something. The next indicator would be 'an intense swarm of earthquakes lasting a few hours' that signals magma moving up to the top.
The Icelandic Met Office (IMO) has already upgraded the Aviation Colour Code from green to yellow in preparation for whatever is going on.
That's because they're anticipating that disruption to air travel could be possible.
An IMO statement reads: "Multiple datasets now indicate that Grímsvötn volcano has reached a level of unrest."
Anyway, Grímsvötn is even bigger than that one, and is covered with ice on the top. The folks who look at these sorts of seismic shenanigans have noticed there seems to be something rumbling away within the bowels of the ancient volcano.
That seismic activity could mean that magma is swelling therein, and could soon erupt forth into the world.
Because it's covered in ice, the eruptions for this particular volcano aren't usually that bad. The emissions hit the ice and clump together, meaning there are less fine particles shunted up into the sky to annoy the aviators.
