Air bubbles trapped beneath the surface of the frozen Kluane Lake in northern Canada have created amazing but strange patterns in the ice. /VCG Photo

Stunning photos show the rare phenomenon where the ice slowly engulfs the air escaping the lake, turning them into frozen pockets beneath the surface. /VCG Photo

Robert Postma, an amateur photographer who captured the incredible shots, said it reached at least -25 degrees when he was taking the photos. /VCG Photo

Kluane Lake is the largest lake in the southwest area of the Yukon Territory. It has a high density of large-bodied lake trout and whitefish, and is known as a great place to fish. /VCG Photo