This was a nice hike, but there are better choices in the area...I'd recommend Maple Pass or Blue Lake over this one. There's some nice fall foliage along the trail right now. The Thunder Knob trail takes you to an overlook of Diablo Lake, but honestly the overlook that you can drive to along Highway 20 has better views. https://www.outdoorproject.com/adventures/washington/special-destinations/diablo-lake-overlook It was a nice outing, but if I had it to do over, I'd spend my time in the North Cascades elsewhere.
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