Limestone lake is considered to be the largest and most outstanding example of a marl lake in the world. It is a turquoise body of water that changes colour as calcite in the water dissolves or precipitates depending on temperature. When the water is warm, calcite comes out of the solution and forms microscopic crystals, which give the water its milky white colour. The source of the calcite is underground water, which flow into the lake in significant quantity. #Marl or marlstone is a calcium carbonate or lime-rich mud or mudstone which contains variable amounts of clays and silt. The dominant carbonate mineral in most marls is calcite, but other carbonate minerals such as aragonite, dolomite, and siderite may be present. #marlstone #limestone #limstonelake #littlelimestonelake #manitoba #travelmanitoba #emo #rasta #canada