As a polar vortex sweeps across the United States and Canada, an iconic piece of landscape is reflecting the record freeze: Niagara Falls, which has partially frozen.

While the 167-foot falls have definitely not frozen over completely, the great Niagara iced over enough for Reuters photographer Aaron Harris to get some stunning shots, Yahoo! News reported.

The ice formed on the side of the falls near the United States, reacting to Tuesday's record low of -2 degrees. The big freeze resulted in some panic and a rash of misleading photos, including this one from 2011, which was unfortunately retweeted more than 10,000 times.

According to The Washington Post, some 76,000 gallons of water flow over the falls every second at a rate of 32 feet per second, a powerful force that is incapable of freezing over in just a few days of cold.

The partial freeze should soften later this week as the temperature is forecast to rise to 46 degrees, Yahoo reported.

According to archived photos, Niagara Falls seemed to be partly frozen for periods in the early- and mid-1900s.

Freezing weather has only once ever "caused the thousands of cubic feet of water per second flowing over the Niagara Falls to run dry, an event thought to have been caused by ice jamming and damming upriver," the icy incident happening back in 1848, according to EnvironmentalGraffiti.com as quoted by Yahoo.

Giant ice boulders weighing as much as 75 pounds each were found in Michigan this week, floating near the shores of Lake Michigan.

Park Ranger Annie Lipscomb explained on MLive.com that the huge, rounded ice chunks form when pieces break off large sheets of ice on the lake and become smoothed by the waves.

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