If breaking a mirror is seven years of bad luck, how many years do you get for witnessing a lake shatter? YouTuber RadiantSpiritGallery recently posted a video that captures Lake Superior as its icy surface is naturally pushed to its breaking point, leaving shards of jagged glass-like pieces stacked along the shore.

RadiantSpiritGallery explains the phenomenon they witnessed from around Duluth, Minnesota, in the video's caption. Under certain weather conditions, the layer of ice that covers Lake Superior is thinner than it would be during colder winters. Strong chilly winds can continue to push against it, causing the thin sheet of ice to slide on the surface of the water. Eventually, that flow is interrupted by the shore or an immovable object like an iceberg, causing the sheet to shatter into pieces.

The videographer says those pieces can measure up to 3 inches thick. The sheets have nowhere to go, so they naturally stack on top of each other as more pieces are pushed into them by the wind. According to the Lake Superior Streams website, the sheets of ice have been known to reach between 5 and 10 feet high.

The video (above) shows the ice stacking happening in real time, as the photographers spent two hours watching the natural event occur. Two years ago, they posted the video below which also shows ice stacking on Lake Superior, but from a wider angle. Watch both and be jealous that you aren't there to see it in person.

[h/t Gizmodo]