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I am going to continue with the Canadian Rockies theme from an older batch of photos. This is beautiful Peyto Lake in Banff National Park, Alberta, Canada.

You might wonder how these lakes have such a colours. Well, here's a short explanation for that: These lakes are can thank their brilliant blue-green colour to the light filtering effect of rock flour (a powdery substance that the glaciers grind off the mountain rocks) in the glacial runoff (meltwater).

The rock flour that is suspended in the water filters out much of the light spectrum except for blues and greens leaving this remarkable turquoise blue color. The rock flour might also leave that milky look to the water. That's why each lake looks different and each lake might look different on the same day. For example, on a calm morning or evening, the lake might look like a mirror and the colours is barely visible. But on other times of the day the lake is blue. It all depends on the weather conditions and how much rock flour is present in the water.

This is another photo from my archives and taken with my old 1.3 megapixel camera.

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