I was traveling across Washington on hi-way 20. The highlight of this route is the gorgeous Washington Pass area.
The unique, intense turquoise hue of the lake's water is attributed to the surrounding glaciers that grind rocks into a fine powder that is carried into the lake through creeks. That fine powder, also called glacial flour, stays suspended in the lake, giving the water its brilliant color.
It is a beautiful area that calls to me to spend more time exploring here. But alas, I was more interested in visiting my friend in Vancouver BC. I will return.