This is a hole in the ice, with water below. We chisel a hole in the ice every day to get water to drink, cook with, and feed the dogs. Other people drill holes in the ice to fish. In this photo, Dave is sawing a large hole. We helped our friends cut blocks of ice with huge saws. They use ice for refrigeration. They store the ice in a shed and it lasts all summer long!
Clue #1 You can see both a solid and a liquid.
Clue #2 Everyone depends on this liquid to survive.
Clue #3 You could swim in this, but it would be quite chilly!