
A rather common occurence at the Presena glacier in northern Italy is the appearance of "watermelon snow."
Algae causes the ice in the glacier to turn pink, and while it certainly is a sight to behold, it's not necessarily a good thing.
Di Mauro has previously studied the Morteratsch glacier in Switzerland, where an alga called Ancylonema nordenskioeldii has caused the ice to turn purple.
Via CNN