Every few years, a stunning event takes place in Patagonia, as tons of hardened glacier ice of Perito Moreno plummets into the chilly waters below, making for an awe-inspiring spectacle that draws thousands of people to the area to observe. While this event is rather unpredictable, recent measurements have shown that another collapse may be coming in the near future. Fret not, environmentalists; this is a naturally recurring event at Perito Moreno Glacier that isn’t the result of global warming.