Nature Ice Flower in Ice Cube

In B.C., we had a dry heatwave from August 13 to August 17, and it was up to 37 degree in my west facing apartment.  It was 32 degrees while blowing air conditioning 12 o'clock at night.  The concrete and dry walls were emitting all the heat during the night while absorbing more heat during the day.

My wife thought of using big ice cubes to cool the rooms down.  When we took them out of the freezer, they look beautiful inside, just like some kind of flower sculptures.  They were natural but symmetric and beautiful.

Small natural phenomenon like this are interesting to our daily lives.