At first glance, this may appear to be an artificial lake of sorts, but it’s actually Minnesota’s Medicine Lake. In the video, you’ll see ice needles being pushed up from the water onto the shore. This phenomenon is so rare that it already received over 1.2-million views on YouTube in less than 2-days. Continue reading to see why.

According to a local weather report, temperatures were in the high 70s when this video was shot, mixed with strong winds. These two weather phenomenon combined helped push an ice sheet covering the lake against the shore, creating the needles.