If you've noticed strange circular shapes on the ice surface of the Rideau Canal lately, fear not: they don't portend some alien takeover, but they just might signal a different kind of invasion. According to the National Capital Commission (NCC), the symmetrical patterns that have reminded some curious onlookers of crop circles are really part of the preparation for the coming skating season. The strange patterns are formed when crews drill holes in the ice, then pump water from underneath to thicken the frozen surface. The NCC says those anxious to skate on the Rideau Canal, seen here on Jan. 2, need to remain patient a little longer. The NCC has also told residents to stay off the ice.

Source: CBC News January 05, 2021 09:00 UTC