I'd been wondering what this heart-shaped hole in the ice was all about; thought perhaps made for a loved one, maybe a message to the planet! Today I found out that it is the work of a small group of enthusiasts who come daily to immerse themselves in the icy water, believing it strengthens the body, makes them healthy, etc. There was a person clearing frozen chunks of ice out of the pond, dressed in a bathing suit, whose legs were the colour of a tomato. It was -11 when I walked by with a windchill of -17. This photo shows the hole from a few days ago, it is now less heart-shaped and a bit bigger.