Abraham Lake on Alberta’s North Saskatchewan River is a newer lake. It wasn’t created by glacial action, though its waters are glacial blue, but rather by the damming of the river in 1972. It’s cold in the winter in the Canadian Rockies, but this is a great time to see the lake’s famous bubble phenomenon. Decaying plants emit methane, resulting in bubbling of the water as it freezes. Methane is flammable so don’t light up near the ice if you smoke.