We did the more difficult hike and it was moderate difficulty. At times i was out of breath but it was very good exercise. Magnificent views. You pass 2 waterfalls and 2 lakes. The views along the way are top notch.
We all enjoyed the hike very much. When you reach the lake, it is a beautiful blue/green color. So much to see. It is worth the effort.
There is another hike option if you prefer an easier hike as well.
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