This Hidden Sapphire Lake Is One Of The Most Beautiful In The Whole Wide World

Diablo Lake in Washington is almost too blue to be true. This stunning reservoir is located in the North Cascade mountains of northern Washington and boasts a turquoise hue that has to be seen to be believed.

Diablo Lake is part of the Ross Lake National Recreation Area and can be reached via Highway 20. The lake is managed by the Skagit River Hydroelectric Project, which offers daily boat tour in the summer. Click here to find out more about exploring the lake.

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