Diablo Dam in the North Cascades.

Diablo Lake & Lunch Tour: Dams, Monkeys, and a Green Lake

Diablo Lake isn’t a lake. It’s a five-mile reservoir created by Diablo Dam. Tucked within the North Cascades in Washington State, it has a stunning setting with snow-capped mountains on either side. Even more remarkable is the lake’s green hue, which is from particles of mica in the glacial rock flour (a dust mixture from…

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