UNDATED - Our recent snow, and colder temperatures, doesn't mean the ice on area lakes is safe.

The Minnesota Department of Natural Resources is reminding you the ice in many parts of the state is still not thick enough for most activities.

Also, the new layer of snow is insulating already brittle ice, making it even more dangerous.

Ice needs to be at least four inches thick to walk on, five inches for a snowmobile or ATV, 8-12 inches for a car, and 12-15 inches for a medium-sized truck.

Last winter, four people died after falling through thin ice.