Frozen surface of the water. Aerial shot. River and stream in winter. And ice cracks. Pole poles antarctica north south arctic ocean sea ice antarctic ocean frosted frost icy winter snow iced icebound icefield thick sheet polar shards fractures crack lake river stream dam white green blue below zero subzero dry cold cool glassy plates plate extreme climate weather region zone glacial glacier perishing iciness best hoarfrost 3840×2160 resolutions.